7 Must-Add Waiver Wire Pickups for Week 13 Fantasy Baseball (2026)

June 20, 2026

Andy breaks down his must-add fantasy baseball waiver wire pickups for Week 13 of the 2026 MLB season. Add these players now off the waiver wire and win more.

Hello RotoBallers! Welcome back to another edition of our 7 Must-Adds ahead of Week 13 of the fantasy baseball season. As we approach the second half of June, it is crucial to continue to monitor the waiver wire for potential breakouts that could propel your team in the second half.

This week, we will spotlight two emerging outfielders, a top injured player to stash, and a newly-named closer in the Bay Area.

So, let's look at the best waiver wire targets!

2026 Fantasy Baseball Week 13 Waiver Wire Adds

Cole Carrigg, OF, Colorado Rockies

20% rostered

Carrigg was spotlighted in last week's edition, but the young outfielder is still widely available on Yahoo and has begun to flash high-end upsd upside in his first taste of MLB action. Carrigg joined the Rockies last week with many outfielders on the shelf (Mickey Moniak, Brenton Doyle, and Jordan Beck), which has given him ample at-bats.

Over his first nine contests in Colorado, the outfielder has posted a .212/.316/.545 line with one triple, three home runs, a stolen base, and a 9:5 K:BB. Over these nine contests, Carrigg went hitless in four of them and tallied multiple hits in two of them.

While the sample is small, Carrigg is showcasing high-end five-category potential, which makes it a priority target for those in standard leagues. In the early going of his MLB career, the 24-year-old has generated an impressive 74.3 mph average bat speed with a 12.5% barrel rate. He also draws walks at an elite 13.2% barrel rate, which will open the door for ample stolen-base opportunities, given his dominant 95th-percentile sprint speed.

Earlier this season, Carrigg was showcasing high-end upside at the Triple-A level. With Albuquerque, Carrigg held a .338/.414/.529 slash line with a .943 OPS, 15 doubles, six home runs, and 30 stolen bases. While he has only swiped one bag so far in the majors, given that he has already drawn walks at a high rate, managers should expect this number to surge over the coming weeks.

With a clear path to at-bats in the short-term, Carrigg is one of the few players on the waiver wire who possess true five-category potential.

Cole Carrigg has three home runs in his first seven games.

Not too bad for your first week in the Majors.#Rockiespic.twitter.com/ZFmNxQnUpJ

— Eric Cross (@EricCrossMLB) June 16, 2026

Henry Bolte, OF, Athletics

5% rostered

Another emerging outfielder to know is Henry Bolte. Unlike Carrigg, Bolte earned the call to the majora much earlier but still remains quite under-rosterted, sitting on the waiver wire in nearly 90% of current Yahoo leagues. Since joining the MLB roster (33 games), Bolte has held his own, carrying a .314/.385/.422 line with five doubles, two home runs, and six stolen bases.

While he has only totaled 11 runs and nine RBI, he has been a plus asset for batting average and speed.

Earlier in the season, Bolte was flashing immense five-category upside at the Triple-A level, which made him an intriguing stash target. At Triple-A Las Vegas, Bolte held a dominant .348/.418/.658 slash line with 12 home runs and 17 stolen bases.

While this high-end five-category profile has yet to show up in the box score in Sacramento, the 22-year-old does have some very positive underlying marks. So far, the team's No. 5-ranked prospect sits in the 100th percentile in sprint speed and has generated an eye-catching 77.1 mph average bat speed. Playing in a favorable park for hitters will bolster his power totals, even if his 5.8% barrel rate and .340 xSLG remain low.

His 29.1% K% lowers his floor in points leagues, but those needing a high-end stolen base option with a high-floor batting average should look to target Bolte this weekend.

ATH - Henry Bolte Solo HR (2)

📏 410 ft | 💨 102.6 mph | 📐 23°
⚾️ 92.1 mph four-seam fastball (PIT - LHP Evan Sisk)
🏟️ Out in 19/30 parks

PIT (12) @ ATH (3)
🔻 7th#Athletics pic.twitter.com/mHvo65wjp8

— MLB Home Runs (@MLBHRs_) June 18, 2026

Kody Clemens, 1B/2B/OF, Minnesota Twins

15% rostered

The next hitter we'll spotlight is a pure option for those chasing power. Kody Clemens was a reliable source of home runs during the 2025 season when he enjoyed a breakout campaign, launching 19 home runs. However, he was all liability in batting average, carrying a low .213 BA. Through the early going in 2026, Clemens has shown further progress on the mound and is emerging as a far more stable fantasy option.

Across 63 games in Minnesota, Clemens has held a .250/.313/.486 line with 13 doubles, 11 home runs, and has even swiped six bags. His stolen bases have already reached a career high and further raised his fantasy ceiling. However, when looking at his underlying hitting metrics, managers can begin to spot a potential Year 5 breakout.

The 30-year-old has posted a solid .337 xwOBA, .257 xBA, and a high-end .455 xSLG, suggesting his current projection is sustainable. Additionally, Clemens has generated a 93rd-percentile average exit velocity, a 13.1% barrel rate (82nd percentile), and an above-average hard-hit rate.

When looking at his marks in the 2025 campaign, Clemens' barrel rate has increased by 1.1% and his xBA by 14 points. While his Pull AIR% has dropped slightly (18.9% - 23.2%), his previous product suggests there is room for positive regression in those statistics.

For those in points leagues, even though Clemens is enjoying more sustained power, he has lowered his K% by three points (24.1% - 21.8%) over the past year.

With a clear path to at-bats and a more stable profile, Clemens could push for a 25-HR campaign while holding a reliable batting average (in the .250 range) with double-digit stolen bases.

Kyle Teel, C, Chicago White Sox

10% rostered

The final hitter we will spotlight is for those needing a backstop. Kyle Teel has yet to step on the MLB diamond this season after suffering a hamstring injury during the World Baseball Classic. While his recovery has been lengthy, managers needing a spark at their catcher position should not wait long to pick up this former top prospect.

Teel recently began his rehab assistance with Triple-A Charlotte and is on the verge of making his 2026 season debut. Throughout his rehab assignment with Charlotte, Teel is looking like his former self, posting a .318/.375/.591 slash line with two home runs and a 5:2 K:BB. During this short six-game stint, Teel has tallied at least one hit in every game and held a .966 OPS.

The former 14th overall pick (drafted by the Boston Red Sox) made his MLB debut last summer, on the South Side, and held his own on his first taste. Through 78 games with the White Sox, Teel held a .273/.375/.411 slash line with 11 doubles, eight home runs, and three swiped bags. He generated an above-average .337 xwOBA with a stellar 47.8% LA Sweet-Spot%.

Even though Teel did not generate the loudest contact (37.6% hard-hit rate and a 9.6% barrel rate), he posted a high 20.8% Pull AIR%, which allowed him to tap into his home run upside.

When active, Teel should see the majority of starts in a Chicago lineup that has shown some progress on offense with the emergence of Colson Montgomery and Miguel Vargas. Teel should push for double-digit home runs and steals over the remainder of the campaign and could finish as a borderline top-12 option at the position, once he returns to the diamond.

KYLE TEEL!! VERY. FIRST. PITCH. 💣 pic.twitter.com/5V9XHgC8Pw

— Charlotte Knights (@KnightsBaseball) June 16, 2026

Griffin Jax, SP, Tampa Bay Rays

30% rostered

The first starting pitcher we will spotlight is Griffin Jax of the Rays. Jax was viewed as a popular bullpen target heading into the 2026 season, as he had a clear path to compete for saves in Tampa Bay. Without a clear closer on the roster and Edwin Uceta on the shelf, Jax (and his previous experience as a high-leverage pitcher) seems poised to emerge as a potential 20-save candidate with elite strikeout upside.

However, after Jax stumbled in the bullpen early on, the Rays opted to transition the right-hander into a starting role. While it took him some time, Jax was eventually cleared to begin pitching out of the team's starting rotation.

Through his first 25 innings (as a starter), Jax held a 3.60 ERA with a 22:9 K:BB. However, over the last two outings, Jax has looked far more comfortable, posting a perfect 0.00 ERA over 10 innings with a 9:2 K:BB. While his high-end strikeout upside has not transferred over from the bullpen, Jax is gradually seeing improvement, which has put him in a position to enjoy sustained success.

Since the start of June, Jax has begun to lean on his four-seamer far less and instead deploy his sinker, sweeper, and changeup as his top three options (as shown below).

Given that his four-seamer has posted a hefty .454 xwOBA through the opening two months, this change should put him in a great position to enjoy more sustained success. His new "primary" pitch, his changeup, has generated an eye-catching 35.6% whiff rate with a .272 wOBA (.293 xwOBA). His sweeper has generated a whiff at an even higher 41.1% clip and holds a similar .287 xwOBA under the hood.

While his sinker has still not found much success (.359 xwOBA), his primary whiff options are showcasing high-end upside. Managers should expect his low 22.3% K% to enjoy some prominent positive regression over the next few weeks, as his 30.8% whiff rate places him in the 89th percentile among all qualified pitchers.

Jax may see his innings limited, but his two high-upside whiff pitches make him a more worthy target if looking for upside at the starting pitcher position.

Javier Assad, SP, Chicago Cubs

25% rostered

Javier Assad was pushed into a starting role due to Chicago's numerous injuries and has done more than hold his own. Over his last three outings (with two of them being starts and the other being a long-relief showing), Assad has logged 18 innings to the tune of a 1.00 ERA and a 0.61 WHIP. During this stretch, the right-hander has struck out 11 hitters and allowed just two free passes.

Prior to this stretch, Assad held a 5.88 ERA over his first 26 innings of the campaign, but much of this was inflated by a six-run effort on April 25 and a nine-run effort on April 13.

While the 28-year-old is not the target for strikeouts, he could provide strong ratio support while he remains in the starting rotation. Assad relies on a kitchen-sink approach, deploying three pitchers more than 17.0% of the time and mixing in three more at least 7.0% of the time each.

The primary pitch in his arsenal is his sinker, which he has thrown 38.7% of the time this season, and 32% of the time in June. This month, this pitch has performed exceptionally well, generating a .171 xwOBA, compared to the overall .307 xwOBa it holds on the season.

While his four-seamer has not been overly effective, the pitch to watch is his sweeper. In June, it has generated a stellar 33.3% whiff rate with a .043 xwOBA. If this pitch can continue to remain his primary breaking ball, he could see his strikeout numbers keep growing.

The other component of his price that makes him a worthy target in standard leagues is his high-end command. Assad has generated an eltie 5.2% walk rate, which has kept his WHIP on the season at a low 1.00 mark.

The strikeout potential will be limited, but those looking to target a hot pitcher to boost their ratios should pick up Assad amid this impressive stretch.

Caleb Kilian, RP, San Francisco Giants

10% rostered

Rounding out this week's column will be our closer of choice. Caleb Kilian was recently given the seal of approval by his manager and will serve as the primary closer going forward. While the Giants could continue to sporadically use other options in the ninth inning (as they did on June 17), Kilian is now the clear favorite to earn saves.

Since serving up a season-worst five runs on May 29 at Coors Field, Kilian has logged 7 1/3 straight shutout frames with an 11:3 K:BB and one save. Overall on the season, Kilian holds a 3.06 ERA and a 1.11 WHIP over 32 1/3 innings, which is also greatly inflated by his showing at Coors Field.

Under the hood, the right-hander holds a 63rd-percentile xERA with an elite 28.6% K% and a strong .219 xBA. While the save opportunities may be hard to come by, Kilian should see the bulk of them and has a path to finish the campaign with around 15-20 saves.

Other Waiver Wire Targets

• Mick Abel, MIN
• Gage Jump, ATH
• Dylan Crews, WAS
• Elvis Alvarado, ATH
• Yoendrys Gomez, MIN
• Colt Emerson, SEA
• TJ Rumfield, COL
• Jordan Lawlar, ARI
• Blaze Jordan, STL
• Josh Bell, MIN
• Samad Taylor, SD
• Spencer Jones, NYY

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