St. Louis Cardinals outfield prospect Nathan Church went deep in his spring debut over the weekend and is a name to follow amid the team's current outfield depth. With starting left fielder Lars Nootbaar (heel) expected to miss the start of the season, Church could claim a starting role with a productive showing in camp. Last summer, the 25-year-old made his MLB debut but did not find much success over his first stint, holding a .179/.254/.250 line with a double and a home run across 27 games. However, at Triple-A, Church showcased his five-category profile, which makes him an intriguing sleeper for deeper formats in 2026. Through his lone 53-game stint at Triple-A, Church posted an impressive .335/.400/.521 line with seven home runs and nine stolen bases. If he continues to hit for power in camp, he could be worth a late-round pick in deep 15-team formats.

Houston Astros right-handed pitching prospect AJ Blubaugh is in competition for the final rotation spot, according to Chandler Rome of The Athletic. The team's No. 13-ranked prospect on MLB.com will be competing alongside the favorites, Spencer Arrighetti and Lance McCullers; however, Rome has noted that Blubaugh, Peter Lambert, and Ryan Weiss have begun to "open eyes." Blubaugh made his MLB debut last summer and looked quite impressive, logging 32 innings with a 1.69 ERA and a 0.88 WHIP. During this stint, Blubaugh was deployed both as a starter and a reliever, tallying 35 punchouts while posting a modest 9.6% BB%. However, his elite .184 xBA helped keep runners off base. He is a name to monitor in camp as he could push McCullers or Arrighetti, given their struggles last season and lengthy injury histories.

Arizona Diamondbacks outfield prospect Ryan Waldschmidt has already begun to showcase his power upside as he looks to claim a spot on the Opening Day roster. Through his first three games (10 at-bats), the team's top hitting prospect has hit a double and gone deep while posting an .873 OPS. The Kentucky product has also begun to see time in the center field in addition to his time in left field, further suggesting the Diamondbacks are attempting to find an early-season role for him. Currently, they are without two starting outfielders as Lourdes Gurriel Jr. (knee) will not be ready for the beginning of the season, and Corbin Carroll (hand) is targeting an Opening Day return, but any minor setback would push him past this target date. Last season, Waldschmidt spent his time at High-A and Double-A and posted an overall .289/.419/.473 line with 18 home runs and 29 stolen bases. Even though he has never played a game at Triple-A, he is in a prime position to break camp with the MLB roster, given their numerous injuries.

Chicago Cubs first base prospect Jonathon Long (elbow) took some swings on Tuesday, according to Meghan Montemurro of The Chicago Tribune. Long suffered this injury during a spring training contest over the week but apepars ot be progressing rather well. Cubs manager Craig Counsell also noted that is "soreness is dissipating." Montemurro also noted that while Long was expected to depart on Tuesday for the World Baseball Classic, he will instead depart the team on Friday to ensure he is fully healed. Last season, the former ninth-round pick spent the entire campaign with Triple-A Iowa and held a strong .304/.404/.479 slash line with 23 doubles, 20 home runs, and a 116:79 K:BB. If he continues this level of play, Long should be in the mix for a promotion within the first half.