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About Michael Grennell - RotoBaller

I've been writing about baseball for six years now, and I've been playing fantasy baseball for almost 10. I spent the 2016 season as the beat writer covering the Ogden Raptors for the local newspaper, and now I'm the social media intern/team photographer for the Bristol Pirates.

Michael Grennell - RotoBaller has written 57 articles so far, you can find them below.


A starter, a starter! My fantasy league for a starter! We're still three months away from the start of the season, but now is the perfect time to take a look at some starting pitcher prospects on the rise and some that need to turn things around. Last season saw several pitchers make their highly... Read More

The Mariners rang in the new year with yet another move, as news broke in the final hours of 2018 that Nippon Professional Baseball pitcher Yusei Kikuchi had signed a four-year deal with Seattle. Kikuchi will be joining the Mariners after a "down" season in which he only went 14-4 with a 3.08 ERA —... Read More

The wheeling and dealing in Seattle continued just days before Christmas with the Mariners acquiring right fielder Domingo Santana from the Brewers. In the team's fourth trade in the month of December and their eighth trade of the offseason, Seattle sent outfielder Ben Gamel and reliever Noah Zavolas to Milwaukee for the 26-year-old Santana. After... Read More

2018 Pitching Fallers - ERA

In my last piece, we took a look at some of the pitchers who made significant improvements to their ERA in 2018. Now it's time to take a look at the guys who went in the other direction, and see if it's time to panic on them. This list features two starters who were being... Read More

The latest free agent pitcher to find a new home is former Houston Astros starter Charlie Morton, who signed a two-year deal on Wednesday to take his talents to Tampa Bay. Morton underwent a career resurgence in Houston, where he won a World Series ring and earned his first All-Star Game appearance after nine seasons... Read More

The buzz all off-season surrounding the White Sox has been whether they will break out the checkbook and land superstars Bryce Harper or Manny Machado. Well, it took only three days into the Winter Meetings for the White Sox to... trade for Ivan Nova. While this may not have been the big move White Sox... Read More

2018 Pitching Leaders - ERA

It was an impressive year for ERA in 2018, as MLB's combined 4.14 ERA was the lowest since league pitching recorded a 3.95 ERA in 2015. Just to give you an idea of how much pitching improved this year, all four of the pitchers that will be mentioned in this list finished in the top-10... Read More

It's the final week of the regular season. It feels like it's gone by in a blur, doesn't it? At this point in the season, you're either already done or any prospects that will make an impact this week are already owned. So in this week's list we're going to do a quick-hit, season-in-review to... Read More

It's our final Rookie Report of the 2018 season, and in it we'll take a look at a former first round pick who finally made his major league debut. After being the 31st overall pick in the 2014 draft, Justus Sheffield made his debut with a shutout ninth inning in the Yankees' 10-1 win over... Read More

In this week's Rookie Report, we'll be taking a look at several catchers making an impact in fantasy this month. Francisco Mejia made a splash in his first start for the Padres, hitting his first and second career home runs while driving in four in the 6-2 win over the Reds. While Mejia may have... Read More

Philadelphia Phillies first baseman Rhys Hoskins continued to show off his power on Wednesday, as he hit his 35th double and 32nd home run of the season in the Phillies' 4-0 win over the New York Mets. It's been a while since the Phillies have seen a power output like this, with Hoskins being the... Read More

After struggling through the month of August and into early September, Tampa Bay Rays first baseman Jake Bauers continued to show signs that he's slowly heating up as he recorded a pair of doubles in the Rays' 9-3 win over the Texas Rangers. The two doubles were Bauers' only hits of the night as he... Read More

Tampa Bay Rays outfielder Tommy Pham launched his 18th and 19th home runs of the season in the Rays' 9-3 win over the Texas Rangers on Wednesday night. Entering the game, Pham had only had one home run in the month of September, and had three total since being traded to Tampa Bay at the... Read More

St. Louis Cardinals starting pitcher Jack Flaherty struck out six batters over 4 2/3 innings against the Atlanta Braves on Wednesday night. Flaherty allowed five runs on five hits and two walks to earn his eighth loss of the year in his shortest outing since the beginning of June. Wednesday's outing marked the 13th consecutive... Read More

St. Louis Cardinals outfielder Harrison Bader's solo home run in the fifth inning was his only hit of the night in the Cardinals' 7-3 loss to the Atlanta Braves on Wednesday night. The home run was Bader's 12th of the season, as he is now hitting .267 with a .767 OPS over 129 games this... Read More

Can you believe that the fantasy baseball season is almost over? It's well into the fantasy playoffs now, so this is the time for owners to start planning ahead for next season. Probably the hottest prospect this month who will maintain his prospect status heading into next season is Francisco Mejia. After homering twice in... Read More

Cleveland Indians starter Mike Clevinger recorded his fifth straight quality start on Sunday in the Indians 6-2 loss to the Blue Jays. Clevinger allowed three runs on four hits and two walks while striking out nine over six innings. Over his last 10 starts, Clevinger has averaged six innings and seven strikeouts per start, and... Read More

It's September! Not only does that mean fantasy playoffs, it means prospects getting called up with the rosters expanding. For the last few weeks of the season, we'll be looking at players who can give your team a boost this year for a fantasy playoff run. Realistically most of the prospects who will help you... Read More

Same report, new management this week, as I will take over the Rookie Report for Max for the remainder of the season. I've been writing about the hot prospects dynasty owners should be keeping an eye on this year, and now I'll also be diving into the best rookies for fantasy owners to pay attention... Read More

Can you believe that the minor league season is almost over? Just one more week left before playoffs begin. We've taken a look at a lot of prospects this year — some who are nearly household names by now and others who are flying under the radar. This week's list doesn't feature a "big-name" prospect... Read More

Arguably the most exciting pitching prospect in baseball gets the call today, as Michael Kopech will start for the Chicago White Sox tonight against the Minnesota Twins. Kopech appeared in last week's column, where we looked at his long term value going forward. We're going to take a look at him again this week, but... Read More

Over the past few weeks on this column, we have been taking a look at hot prospects that were either not as well known or were still some ways away from reaching the majors. This week however, we're looking at some of the big name prospects out there that have been on fire over the... Read More

There's a lot of good young talent coming up through the minor leagues right now, so this week we're going to take a look at four prospects under the age of 20 who have been on a hot streak. The four players on this week's list are still a couple years away from making an... Read More

Today is the trade deadline and it seems safe to assume we'll be seeing more prospects landing on new teams by the end of the day. Last week we took a look at some top prospects that could potentially have a path to the majors open up by trade or that could themselves be traded... Read More

As if the Boston Red Sox didn't already have one of the top rotations in baseball this year, they managed to improve upon it by acquiring Nathan Eovaldi from the Rays on Wednesday. Eovaldi has been working his way back from his second Tommy John surgery, and in his first action in over a year... Read More

It's getting closer to the trade deadline and we're starting to see prospects finding new teams as star players go on the move. Francisco Mejia is the biggest name prospect to have been traded already, heading to San Diego in the deal that netted Cleveland Brad Hand and Adam Cimber. The Dodgers sent a package... Read More

On Sunday some of the top prospects in all of baseball came together for the All Star Futures Game and put on one of the biggest offensive displays in the game's history. While a single exhibition game cannot solely provide any conclusions about how a prospect will fare in the future, it can become the... Read More

We've got some variety in store in this week's list, as we take a look at players with high power, speed and strikeout potential. All three of this week's players are ranked as top 30 prospects in their team's systems by MLB Pipeline, but they can find themselves overshadowed by some of the bigger name... Read More

It's been a month since the 2018 First Year Player Draft, and with the short-season leagues in full swing there's been plenty of time for this year's draft picks to show off some of their potential. With this week's list, we're going to look at some of the 2018 draft picks who have gotten off... Read More

After hitting 10 home runs over 450 plate appearances in 2017, Miami Marlins outfielder Cameron Maybin hit his first home run of 2018 after 209 plate appearances on Sunday in the Marlins' 5-2 loss. Disappointment is an understatement when it comes to describing Maybin's fantasy performance this season, as he is on pace for three... Read More

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