3. Trevor Williams - Washington Nationals
This may not be the most exciting name to appear on this list (those entries come later), but Trevor Williams should definitely be on the Guardians' radar this offseason.
The veteran right-hander appeared in just 13 games for the Nationals this past season, but he was very impressive in those 66.2 innings, finishing with a microscopic 2.03 ERA and 1.035 WHIP while striking out 8 batters per nine innings pitched. This was easily his best season as a pro, and it was not particularly close, even if his season was abbreviated.
There is some concern as to whether or not Williams would be able to carry over his success in 2024 moving forward. Williams has experienced a large amount of variance in terms of effectiveness throughout his career, and his previous track record suggests that 2025 could be a year that sees a high degree of regression.
If Williams can avoid a complete free fall and still be an effective pitcher, he would still be a worthwhile addition to the Guardians' pitching staff. Avoiding having to go down the same path of taking midseason fliers on arms should be a priority, and Williams should be able to help them accomplish that.