The Miami Marlins have claimed right-handed pitcher Brett de Geus off waivers. In a corresponding move, the team designated right-handed pitcher Seth Martinez for assignment, who they claimed off waivers last week. De Geus was traded to Pittsburgh earlier this offseason but will return to the Marlins, with whom he spent time earlier in his career. Last season, the 27-year-old spent time with three MLB clubs, including Miami, and logged a cumulative 11 1/3 innings of relief across 13 games. He allowed nine earned runs and held a 4:7 BB:K ratio. Last summer, De Geus logged 39 innings at the Triple-A level to the tune of a 5.31 ERA and a 1.51 WHIP. He tallied just 27 punchouts and served up 14 free passes. Fantasy managers should expect De Geus to compete for a low-leverage relief role during spring training.

Boston Red Sox shortstop prospect Marcelo Mayer went 3-for-3 with three RBI in Thursday's 6-5 Grapefruit League win over the Tigers, which included a single, a triple, and his first home run of the spring season. The 22-year-old is now 5-for-11 (.455) in the spring, and although he's a long shot to make the team out of camp, the Red Sox have to be thrilled to see him out there fully healthy after finishing last season on the IL with a lumbar strain. The 6-foot-3 left-handed hitter is the third-ranked Red Sox prospect and No. 12 overall in MLB. The former first-round draft pick spent all of 2024 at Double-A, slashing .307/.370/.480 with eight home runs and 13 steals in 335 PA. He's expected to begin the season at Triple-A, but with oft-injured Trevor Story manning short for the BoSox, Mayer is a nice insurance policy who should make his major league debut in 2025, however, he shouldn't be drafted in most standard-sized fantasy leagues.

Cleveland Guardians pitching prospect Franco Aleman (hernia) underwent surgery to repair a hernia in his left hip/groin area, which has a 4-6 week recovery timeline. Had the righty made the team out of camp, he'd probably miss Opening Day, but at this point, it's more likely that he'll begin at Triple-A whenever he returns, which is where he finished last season. The 24-year-old owns a 4.25 MiLB career ERA and a 1.30 WHIP but can strike out batters at a strong rate, recording a 32.9 percent K% with a 7.8 percent BB%. The former 10th-round draft pick could be an effective reliever for Cleveland whenever he gets the call, but he's not on the 2025 fantasy draft radar.

Tampa Bay Rays infielder Curtis Mead has been raking this spring, now 8-for-9 through four games, including a double and a home run with a stolen base to boot. The Australian native is fighting for a roster spot this spring, and it appears he's putting his best foot forward. The right-handed hitter has had some opportunity with the big league club over the last two years but owns just a career .244/.300/.312 slash line in 224 career plate appearances. He showed well at Triple-A last season, putting together a .288-13-41-60-11 line over 91 games (364 AB), so perhaps he's riding some of that momentum into the 2025 campaign. As it stands, he's off the redraft radar, but were he to work his way into a sizeable role during the season, the 24-year-old has some power and speed potential that could make him an intriguing fantasy option.

New York Mets outfield/first base prospect Ryan Clifford collected his first hit of the spring season on Thursday, which was a two-run shot in the sixth inning of the team's 5-0 Grapefruit League win over the Astros. The 21-year-old is now 1-for-6 during the spring, although it's not likely that he'll be with the big league club come Opening Day, regardless of his performance in the Grapefruit League. The former 11th-round pick spent time at High-A and Double-A last season, amassing a .228-19-68-66-4 line over 129 games, although much of that production came at Double-A. While his batting average is nothing special, he's clearly got some power, but also has a knack for getting on base, boasting an elite career walk rate in the minors of 15.7 percent and a .378 OBP. If he can impress at Triple-A this year, there's a chance we see him in New York by season's end, but a 2026 call-up may be more likely, and he'll be more valuable in leagues that reward OBP while providing a decent source of home runs and RBI production whenever he does get the call.