Must-Add Waiver Wire Pickups: Mid-Week Fantasy Baseball Adds for Week 13

June 24, 2026

Dan analyzes six must-add fantasy baseball waiver wire pickups, mid-week adds for Week 13 of the 2026 MLB season. Grab these players asap off the waiver wire.

Hello again, RotoBallers, and happy Wednesday. Now that we are halfway to the weekend, it is time for another mid-week edition of Must-Add Waiver Wire Pickups for fantasy baseball.

This week, we have a couple of players who can help in the infield and outfield, a first baseman licking his chops at his upcoming matchups, and an outfielder on a team with a 10-game road trip that will include stops at two of the league’s most hitter-friendly parks. On the pitching side of things, there is a rare opportunity for saves on the table and a low-rostered streaming option.

As always, the players featured will be rostered in less than 40% of Yahoo leagues, with a couple highlighted for those of you in the deepest of leagues. Read on to discover my Must-Add Waiver Wire Pickups for Week 13 of the fantasy baseball season.

2026 Fantasy Baseball: Mid-Week Waiver Wire Adds

Sam Antonacci, 2B/3B/OF, Chicago White Sox

38% rostered

It took a while for Sam Antonacci to warm up to MLB pitching after being called up in mid-April. Lately, though, Antonacci is looking like a dark-horse candidate in a crowded field for Rookie of the Year honors. In June, the 23-year-old has slashed .328/.438/.557 with three home runs, 14 runs scored, and three stolen bases.

The prolonged surge is a spike in what Antonacci’s steady production has been since May 1. Going back that far, Antonacci has been hitting .308, scored 32 runs (tying him with Freddie Freeman, Pete Alonso, and Ian Happ for sixth-most in MLB), and stole 11 bases (tied for fourth-most).

His notoriety reached new heights on Monday night, with a two-steal, three-RBI performance against the Guardians that culminated in a walk-off single.

Antonacci’s expected stats and plate discipline metrics are among the best in the majors. There is not much power in his bat, but he can use all fields to find a hit. He should be helpful for managers in need of runs, steals, and batting average. He will be outfield-only on most platforms, but according to Yahoo’s generous eligibility standards, he can be plugged in at second and third base, too.

Andrew Vaughn, 1B, Milwaukee Brewers

27% Rostered

It has been hard for fantasy managers to convince themselves of Andrew Vaughn’s utility in fantasy baseball. Vaughn put up underwhelming numbers for over three years with the White Sox before his disastrous 2025 led to his demotion to the minors and eventual trade to the Brewers. Even with the success he saw in Milwaukee, he was undervalued because his splits relegated him to being a short-side platoon bat.

So far in 2026, the right-handed Vaughn is still favoring matchups against southpaws by a wide margin. However, the Brewers are happy to keep him in the lineup on a near-everyday basis. Why? Because against righties, Vaughn is managing a healthy .273 batting average. Against lefties, Vaughn has an absurd .465/.558/.791 slash line.

With only two home runs so far, Vaughn’s profile favors contact over power. This might be a lingering symptom of the hamate fracture he suffered on Opening Day, which kept him out until early May.

Vaughn’s ability to square up has not been affected, and his pull air rate is as high as ever, so I expect that the power should return at some point. In the meantime, he should be a boon for fantasy teams’ RBI and batting average. Vaughn and the Brewers are lined up to see four left-handed starters in their next seven games.

Alex Lange, RP, Kansas City Royals

22% Rostered

Don’t look now, but another mid-season bullpen shuffle has provided us with a low-rostered saves candidate to chase down. With Carlos Estevez’s (shoulder) timetable still uncertain and replacement closer Lucas Erceg having more blown saves (four) than conversions (two) since May 15, the Royals have moved Alex Lange into the closer role.

Lange’s first save came on June 3, and he is now up to six on the season. The 30-year-old has 10 strikeouts and just two earned runs in his nine appearances since taking over ninth-inning duties, but has a WHIP of 1.44 in that span, also.

Lange will be a double-edged sword for those chasing saves. For the time being, he has sole ownership of closing duties for Kansas City. His peripherals are not promising, so he will likely carry higher ratios than one would hope for in his position.

If and when his propensity to allow baserunners catches up to him, expect the Royals to move on. If you need saves, strike while the iron is hot and keep an eye out for other options in the near future.

Tommy Edman, 2B/3B/OF, Los Angeles Dodgers

11% Rostered

Tommy Edman made his long-awaited season debut on June 17. He went hitless in his first game of 2026, but is 8-for-19 in the five games since then.

Edman averaged 85 runs and almost 30 stolen bases per season from 2021 to 2023, so there were high hopes his fantasy value would go through the roof after joining the Dodgers in 2024. Injuries hampered the utilityman’s production, and outside a hot streak to start 2025, Edman has been a dud in Dodger blue.

Offseason ankle surgery repaired ligaments and removed bone spurs, which had apparently been causing Edman discomfort for the last few seasons. Now free of the distraction from pain and the resulting limitations on his game, now is a good time to buy back in on Edman. With experience all over the diamond and being a switch-hitter, he has good potential to remain an everyday piece of the Dodgers’ dynamic lineup.

Starting this weekend, the Dodgers will play on 15 of the next 16 days leading up to the All-Star break. That gives Edman a lot of opportunities to start padding his stats.

Deep League Targets: Mid-Week Waiver Wire Adds

Andrew Alvarez, SP/RP, Washington Nationals

4% Rostered

After grinding out the last five years in the minor leagues, Andrew Alvarez seems to have finally staked his claim to a place on the Nationals’ staff. The 27-year-old started as a bulk reliever but was moved into the rotation in early June. In his four starts, Alvarez has 20 strikeouts and a 2.70 ERA.

Alvarez leans heavily into a mix of curveballs and sliders, with a healthy dose of fastballs and sinkers depending on the handedness of the hitter. He can get hit hard, but for the most part, he is very effective at inducing groundballs, resulting in a 55.7% groundball rate. Alvarez’s xFIP (2.71) and SIERA (3.05) offer optimism that he can maintain an ERA in the mid-threes.

Alvarez is worth streaming this weekend against Baltimore, as the Orioles have the sixth-lowest wOBA against left-handed pitching in 2026. He might be worth hanging on to, as his next start after that should be against the Red Sox or Pirates. Pittsburgh has similarly fared poorly against southpaws, and Boston has hit .226 and the league’s fifth-lowest wOBA in June. Alvarez has yet to go more than 4.2 innings in a game, limiting his value, but he should still help with strikeouts and ERA.

Heriberto Hernandez, OF, Miami Marlins

2% Rostered

I’d like to think that on another roster, Heriberto Hernandez would be drawing more attention. With a 50.5% hard-hit rate, .468 xSLG, and 84th percentile sprint speed, there is potential for Hernandez to make significant contributions to all counting categories.

June has been good for the 27-year-old outfielder. Six of his eight home runs have come since the start of the month, and his .273 batting average over the last few weeks is slowly but surely narrowing the gap between his actual batting average (.227) and his xBA (.261).

This weekend, Miami embarks on a road trip with 10 games in 10 days. After passing through St. Louis, the Marlins move on to a full week of games split between Coors Field and Sutter Health Park.

Aside from the boost in production Hernandez could see thanks to favorable park factors, look for him to add a stolen base or two in his four-game series in Colorado. The Rockies are among the worst in the league at catching attempted steals.

Other Waiver Wire Targets

• Sean Burke, CHW
• Logan Henderson, MIL
• Mauricio Dubon, ATL
• Brayan Rocchio, CLE
• Dylan Crews, WSH
• Samad Taylor, SDP
• Kyle Teel, CHW
• Jake McCarthy, COL
• Jared Triolo, PIT

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