Underdog Fantasy MLB Picks For Today, 5/21: DFS Projections & Plays

We have 15 games across Major League Baseball on Tuesday, May 21st, and plenty of opportunity to secure ourselves a nice winning day on Underdog Fantasy.
Looking for an edge today, we look at Bobby Witt of the Kansas City Royals and Luis Matos of the San Francisco Giants.
MLB Underdog Fantasy Picks Today: Monday, May 20th
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Now, let's not waste any more time and explore our best Underdog Fantasy MLB picks for today to enhance your DFS experience!
Bobby Witt Jr. Underdog MLB Pick: Higher Than 9.5 Fantasy Points
Will one of the best young players in the game please stand up for our coin here? I have total belief he will. Witt, hitting .295 on the year, has elevated that average against right-handed to .305.
He’s done all of his real damage against righties this year posting an OBP nearly 100 points higher than it is versus lefties along with a .522 SLG%, .893 OPS, and .381 wOBA. 12 of his 15 steals have come off RHP. The only handedness giving Casey Mize any issues this year are right-handers. They’re batting .315 with a .337 wOBA off him.
Luis Matos Underdog MLB Pick: Higher Than 1.5 Hits+Runs+RBIs (.9x)
The Giants' former top prospect Luis Matos has been on a tear since being recalled and he’s making everyone aware he doesn’t want to be sent back down anytime soon. Matos has hit in six of the seven games he’s played since being called in and has a robust 17 RBI in eight games played.
In fact, he has 21 runs and RBI combined along with a .333 average to this point. He faces Martin Perez who has been hit by both splits, but righties are batting .300 against him this season. The Giants are road favorites in a game with a very solid 8.5 implied run total because Martin Perez is not to be trusted.
Multiplier: 2.7x
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Player News
Daulton Varsho picked up three hits, three RBI and a homer in a win over the Angels on Thursday.
Varsho has only played in seven games this year, but they’ve been seven good ones. He’s homered three times already, and his slugging percentage is a remarkable — and entirely unsustainable — .727 over 22 at-bats. Varsho has been a mediocre offensive player in his two seasons with the Blue Jays, but it’s possible at the age of 28 he’s having a breakout campaign. Far from a guarantee, but possible.
Taylor Ward hit a two-run homer in a loss to the Blue Jays on Thursday.
Ward, 31, gave the Angels a 2-0 lead with a two-run homer off Chris Bassitt in the first inning. He’s now gone deep in two of his last three games, and it ‘improves’ his slash to .181/.224/.391. Ward has been one of the most hot/cold players players in the sport over the last few years, so fantasy managers who can afford to make some roster moves may want to look at Ward while the going is good.
Vladimir Guerrero Jr. picked up three hits and scored twice in an 8-5 win over the Angels on Thursday.
Guerrero also drew a walk. It gives the first baseman multiple hits in back-to-back games, and it’s the third time in May that he’s reached that mark. That’s helped raise his average from .268 to .295, and the only thing fantasy managers can be disappointed with is his .432 slugging percentage. That number should continue to climb as the season unfolds, but Vladdy Jr. has had some inconsistent seasons when it comes to power production.
Chad Green picked up his first save of 2025 with a scoreless ninth against the Angels on Thursday.
Green got the save after Jeff Hoffman worked in back-to-back games — and struggled — in the first two contests against the Angels. He struck out two and looked the part while needing just nine pitches to get through the inning. Hoffman should remain the closer, but Green is on his tail if the struggles were to continue.
Chris Bassitt allowed five runs — four earned — while working six-plus innings against the Angels on Thursday while picking up a win.
Bassitt allowed three runs over the first two innings on a pair of homers, but settled down over his next four frames. He came out to work the seventh, but ended up being charged for two more runs after leaving the contest. The 36-year-old veteran has forged a 3.35 ERA and outstanding 49/8 K/BB ratio over the first quarter of the season, but this wasn’t him at his best. He’ll get the Rays next week if the rotation order stays the same for Toronto.
José Soriano allowed three runs over five innings while not factoring in the decision Thursday against the Blue Jays.
Soriano left with a 4-3 lead, but it was erased quickly after his departure. The 26-year-old was not exactly dominant in his outing with eight hits allowed and four free passes, but he did strike out six to help balance things out a smidgen. Soriano takes an even ERA of 4.00 into a scheduled start against the Padres in San Diego on Tuesday. There should be better options for that one.