Los Angeles Angels pitching prospect George Klassen tossed 5 1/3 shutout innings for Double-A Rocket City on Tuesday, allowing three hits and one walk while striking out nine batters. It marked the third consecutive dominant outing from the righty, who yielded just one earned run on 11 hits and three walks while striking out 22 over those three starts (13 1/3 innings). The 6-foot-2 hurler could pitch his way to Triple-A by season's end, but he isn't expected to make his big-league debut until sometime in 2026. Still, with a 34.9 percent strikeout rate in 26 minor-league starts, the Angels' third-ranked prospect is a player dynasty managers should be keeping tabs on.

Boston Red Sox infield prospect Marcelo Mayer went 2-for-4 with a double and a home run on Tuesday for Triple-A Worcester, collecting two RBI and one run scored in the process. It was the fourth consecutive multi-hit performance for the left-handed slugger, who also has tallied a whopping 14 RBI over that span. The 22-year-old is now slashing .247/.284/.468 on the young season, with five home runs and a stolen base. The former first-round draft pick is expected to make his big league debut at some point this year, but with Trevor Story, Alex Bregman, and Kristian Campbell each hitting no less than .297, right now there is no path to playing time unless Boston wanted to get him some reps at first base (Tristan Casas is hitting just .158 with one home run thus far). Regardless of exactly when it happens, if it looks like his arrival is getting closer, fantasy managers in redraft leagues should consider stashing him away before his call up.

Pittsburgh Pirates left-hander Bailey Falter (back) was removed from his start early on Tuesday against the hosting Los Angeles Angels due to lower-back tightness, according to the team. Falter is currently being treated by the team's medical staff, and the Pirates will provide an update on his condition when new information becomes available. Before departing the contest in Anaheim, Falter had allowed three earned runs on five hits (one homer) while walking none and striking out five in four innings (65 pitches). It's anyone's guess as to whether the 27-year-old southpaw will be able to make his next scheduled start on Sunday against the Los Angeles Dodgers. Even if Falter's injury is minor and he's able to toe the rubber this weekend, fantasy managers will want to avoid him in that matchup. He has been inconsistent so far in 2025 and entered Tuesday's outing with a 4.91 ERA and 1.18 WHIP in his four starts.

San Diego Padres infield prospect Leodalis De Vries had a monster day at the plate for High-A Fort Wayne on Tuesday, completing the cycle in a 5-for-5 performance. The 18-year-old collected a single, a double, a triple, and two home runs to go along with eight RBI and two runs scored. The effort pushed his season slash line to .294/.351/.608 through 13 games. The Padres' top prospect (MLB No. 17) held his own as a 17-year-old at Single-A last season and now appears to be doing the same at High-A. If he continues to hit, expect to see him test his mettle at Double-A by season's end, although it may be a couple of years before he sees the majors. Nevertheless, still so young and with so much potential, dynasty managers should be keeping a close eye on the switch-hitter's progression.

Texas Rangers shortstop Corey Seager (hamstring) left Tuesday's game early against the division-rival Athletics with right-hamstring tightness. Before leaving, the All-Star shortstop went 1-for-4 at the plate with two runs scored. Josh Smith shifted from center field to shortstop, with Leody Taveras entering the game to play center field. Fantasy managers will be hoping that the Rangers pulled the 30-year-old two-time World Series MVP early as a precaution in an 8-2 ball game, but we won't know more about the severity of Seager's injury until probably Wednesday morning. At the very least, Seager probably won't be in the lineup as the series against the A's continues on Wednesday. If Seager misses extended time, we'd expect Smith to pick up regular playing time at the 6 in Texas. Seager entered Tuesday's contest hitting a strong .288 (21-for-73) with four homers, six RBI and six runs early in the season.