Tampa Bay Rays first base prospect Xavier Isaac is 22 years old and progressing nicely through the minor leagues. His latest stop is at Triple-A Durham where he already has three homers and four RBI in 11 games and is hitting .308. Isaac spent most of the season at Double-A Montgomery where he hit .255 with 24 homers and 71 RBI in 99 games. The left-handed hitter is the No. 18 prospect of the Rays and has 60-grade power and 45-grade speed, but just a 35-grade hit tool. It looks like Isaac could be a detriment to the overall batting average of fantasy teams. But the power appears to be a plus and makes him worthy of a dynasty format stash. It could be a year or two before he makes his MLB debut but fantasy managers will still want to get a hold of him in dynasty leagues.

Tampa Bay Rays outfield prospect Theo Gillen has fared well at Double-A Montgomery since his promotion in mid-July, hitting .287 with 10 homers and 46 RBI with 43 runs scored and 16 stolen bases. Gillen has showed off all his skills at his new level of the minors and continued to be a big threat on the base paths after he had already stolen 28 bases for High-A Bowling Green, giving him 44 total stolen bases this season. The 20-year-old, left-handed hitter is the No. 2 overall prospect for the Rays and has a 55-grade hit tool with 55-grade power and 60-grade speed. The overall skill-set is elite for Gillen, but it still could be a few years before he makes his impact at the MLB level. Nonetheless, dynasty league managers will want to claim Gillen and wait for his five-tool skill set to hit the major-league level.

The Chicago Cubs are planning to activate shortstop Dansby Swanson (oblique) for next weekend's series in Cincinnati against the division-rival Reds, manager Craig Counsell told Patrick Mooney of The Athletic on Friday at Wrigley Field. Swanson will first complete a short minor-league rehab assignment with Triple-A Iowa. He is getting close to returning to the big-league roster for the first time since being shut down with a Grade 2 strained left oblique in the middle of August. The 32-year-old veteran will help the Cubs in their final playoff push for the final nine games or so of the regular season, so he obviously will have a limited impact the rest of the way in fantasy in September. Swanson will be returning to a .216/.300/.404 slash line with a .704 OPS, 18 home runs, 66 RBI, 17 stolen bases, and 78 runs scored in his 403 at-bats this year. The two-time All-Star has been a disappointment in pretty much everything but stolen bases, and he has hit just two home runs in the second half of the season for the Cubbies.

Washington Nationals 18-year-old shortstop prospect Eli Willits made his debut at Double-A Harrisburg on Tuesday and has gone 1-for-8 in his first two games at his new minor league level with an RBI in each of his first two contests. Willits is known as a speedster and has 60 stolen bases combined between three levels of the minors. The switch hitter also has 13 combined home runs with 72 RBI and 100 runs scored. Willits was the No. 1 overall pick in the 2025 MLB Draft and is top prospect in the Nationals system. He has the looks of a future league winner in the category of stolen bases. His stolen base prowess alone makes him worth a dynasty addition . He has a 60-grade hit tool and a 60-grade run tool with 50-grade power. The speed is off the charts and he looks like a future fantasy difference maker.