Washington Nationals manager Dave Martinez said that right-handed reliever Derek Law (forearm) threw from 60 feet on flat ground on Monday and felt good. Law has been dealing with a right-forearm injury since late in the 2024 season and has been on the injured list for the first month-plus of the 2025 campaign as a result. The 34-year-old veteran is starting to ramp up his throwing program, but he still has a ways to go before being activated from the 15-day injured list and will probably require a lengthy minor-league rehab assignment. Law might not make his season debut for the Nats until late-May or early June. Last year for the Nationals he was a solid contributor in a career-high 75 relief outings, posting a 2.60 ERA and 1.18 WHIP with one save, a career-high 76 strikeouts and 24 walks in 90 innings pitched.

Arizona Diamondbacks manager Torey Lovullo said that right-handed reliever Kendall Graveman (back) will make a minor-league rehab appearance on Wednesday for Triple-A Reno. Graveman threw 1 2/3 scoreless innings at the rookie-level Arizona Complex League over the weekend to begin his minor-league rehab assignment and is now ready to face better competition. The 34-year-old veteran hurler has not pitched at all in 2025 due to a right lumbar strain in his back. However, barring a setback on his rehab assignment, Graveman appears poised to rejoin Arizona's bullpen soon to make his 2025 debut. The D-backs could certainly use him with both A.J. Puk (elbow) and Justin Martinez (shoulder) on the injured list, and Graveman could be in the mix for saves with Shelby Miller, Kevin Ginkel and Ryan Thompson when he returns. Graveman has 24 career saves in nine MLB seasons.

Athletics infield prospect Max Muncy stayed hot on Tuesday, going 3-for-5 with a walk, two doubles, two RBI, and three runs scored for Triple-A Las Vegas. Since his return to the minors on April 24, the 22-year-old has gone 18-for-47 (.383) with seven doubles and a home run. Luis Urias has taken over at second base and has been hitting well, but Muncy can play third and short as well, so there are multiple paths for him to get back to the majors this season. The A's may let him get some more run at Triple-A before calling him back up, unless an injury forces their hand, but expect to see him back with the big league club later this year. Fantasy managers may want to hold off on adding him until he proves he's worthy of a roster spot, though, after he hit .176 with a 29.6 percent strikeout in his first 21 games in the majors earlier this season.

New York Yankees right-handed reliever Scott Effross (hamstring) started his minor-league rehab assignment at the rookie-level Florida Complex League on Tuesday. It's been a long time coming for Effross, who hasn't pitched in any game action since spring training late in February due to a Grade 2 hamstring strain. The 31-year-old injury-prone reliever is probably going to require a lengthy rehab assignment because of all his time missed, but he should be ready to make his 2025 season debut by late May, barring a setback. Effross missed all of 2023 due to injury and only made three relief appearances in the Bronx last year, allowing two earned runs while walking two and striking out two in 3 1/3 innings. He's unlikely to become a fantasy asset.

Athletics outfield prospect Colby Thomas is the latest A's prospect hurtling towards the major leagues after he registered two home runs and a double in a 3-for-6 day at the plate on Tuesday for Triple-A Las Vegas. The 24-year-old also collected two RBI and three runs scored in the contest. Over the last seven games, the Athletics' second-ranked prospect has tallied five multi-hit efforts, pushing his season-long slash line to .305/.370/.557 with seven home runs, 25 RBI, 27 runs scored, and two stolen bases. The former third-round draft pick hasn't hit less than .272 at any level since his ascension from Single-A back in 2023, and last season he belted 31 home runs in 132 games between Double and Triple-A. The right-handed slugger looks to be on track for a mid-season call-up, and those looking for a power boost should consider him as he'll be playing in a formidable A's lineup in addition to calling hitter-friendly Sutter Health Park home when not on the road.