Colorado Rockies outfielder Mickey Moniak had a fun homecoming in the third game of the series in San Diego on Saturday against the Padres in a 9-4 loss at Petco Park. Moniak, who went to high school in the San Diego area, went 4-for-4 at the plate with two home runs, four RBI, and a strikeout to raise his season average to .300 and his OPS to 1.113. The 27-year-old former first overall pick in 2016 by the Philadelphia Phillies has found a home in Colorado, at least against right-handed pitching. Moniak broke out in 2025 in his first year with the team, slashing .270/.306/.518 with an .824 OPS, 24 home runs, 68 RBI, 62 runs scored, and nine stolen bases in 461 plate appearances over 135 games. His two homers on Saturday night brought him to five on the year while also adding nine RBI. Although he has limitations against lefties (.491 career OPS), he has become a post-hype prospect, especially in the hitter-friendly environment at Coors Field. Moniak is only rostered in 15% of Yahoo leagues, but he should attract more interest to close out the week after his two-homer game on Saturday.

The Houston Astros announced that shortstop Jeremy Pena (knee) was taken out of Saturday's game against the Seattle Mariners early with right posterior knee tightness. Pena went 1-for-3 in the contest with a single and was eventually replaced by pinch-runner Nick Allen in the fourth inning. The 28-year-old Dominican shortstop also dealt with a fractured finger in spring training and was eased back in for the start of the 2026 regular season before hurting his knee on Saturday night. The extent of the injury is uncertain at this time, but more likely than not, Pena won't be in the starting lineup for Sunday's series finale on Sunday. He came into Saturday's game with 10 hits in 40 at-bats (.250 average) with no homers, no RBI, five runs, and a stolen base. For now, we'll consider Pena day-to-day. But if he does miss extended time, it will be good news for Isaac Paredes, who would see regular starts at third base with Carlos Correa likely moving to shortstop. Pena, who is very capable of a 20-20 season if he stays healthy, should be held onto in all fantasy leagues, even if he goes on the injured list.

Milwaukee Brewers outfielder Garrett Mitchell is quickly becoming one of the most popular additions off the waiver wire after hitting .318 (7-for-22) with a home run and 10 RBI over his last eight games. Overall, Mitchell is slashing .281/.425/.469 with a home run, 13 RBI, and a .411 wOBA over 40 plate appearances. His BB% has improved drastically, rising from 9% last summer to 17.9%, while his hard-hit percentage has increased from 42.2% to 58.8%. Mitchell is worth adding in leagues with 12 teams or more after his recent stretch. The 27-year-old is widely available, as he's rostered in just 17% of Yahoo leagues. Mitchell is currently ranked 53rd in the latest RotoBaller waiver wire rankings and is quickly becoming a popular waiver wire add after his torrid stretch.

Kansas City Royals catcher Carter Jensen is starting to heat up at the plate and has homered three times in his last six games. Jensen is slashing .211/.262/.553 with four home runs, seven RBI, six runs, and 16 strikeouts over 14 games. The 22-year-old has struggled with strikeouts this season, posting a 35.9 K%, almost double last season's strikeout rate. However, his 18.2% barrel percentage is in the 92nd percentile, while his hard-hit percentage (50.0) is in the 79th percentile. Jensen has legit power and homered 14 times in just 43 games in Triple-A last season. His average might not be there yet, but Jensen carries plenty of upside and is only rostered in 30% of Yahoo leagues. Fantasy managers searching for catcher help off the waiver wire should add Jensen in all leagues, especially while he's wielding a hot bat.