Washington Nationals outfield prospect Dylan Crews is once again in the leadoff spot as the Nationals continue a three-game set against the Chicago Cubs. The Nationals have slotted their former second-overall pick to the top of the lineup in each of the past three games. In his first two games at the big league level, he batted in the two and the seven-hole. The LSU product has tallied a hit in all but one of his first four big league games and sits with an overall .313/.353/.813 line. He has gone deep twice and swiped one bag. Fantasy managers should check their waiver wire to make sure Crews is not available, as he is shaping up to be a league-winner down the stretch. DFS players should consider putting the 22-year-old into their lineup as he will face Chicago right-hander Javier Assad, who allowed six hits and three earned runs in his previous start.

Tampa Bay Rays first baseman Yandy Diaz (knee) is not in Saturday's lineup. Diaz was removed from Friday's game early due to left knee patellar tendinitis. Before exiting, the 33-year-old tallied two hits with one of them leaving the yard. Currently, it is still unknown how much time Diaz will miss, so fantasy managers should consider him day-to-day for the time being. As a result, infielder Brandon Lowe will cover first base this afternoon and bat in the two-hole. This opens up the keystone for Christopher Morel, who will bat in the leadoff spot. The Tampa Bay Rays are an intriguing stack in DFS this afternoon as they will face San Diego right-hander Randy Vasquez, who posted a 5.79 ERA and a 1.50 WHIP across his previous four starts.

Cleveland Guardians first base prospect Kyle Manzardo is set to be promoted to the major league roster on Sunday when the rosters expand, according to Francys Romero. Manzardo earned a brief 30-game major-league stint earlier this summer and held a .207/.241/.329 slash line. However, during this stretch, he struggled to find consistent playing time. At Triple-A this season, the former second-round selection has held a solid .267/.389/.548 slash line with 20 home runs, 20 doubles, and an excellent 61:67 BB:K. With Josh Naylor serving as the first baseman in Cleveland every day, Manzardo will likely only serve as the designated hitter. Given his strong production at Triple-A, he is worth adding in deeper leagues, but he could be left on the waiver wire in shallow formats for the time being until he earns a consistent lineup spot.

Baltimore Orioles third base prospect Coby Mayo is set to rejoin the major league roster when the rosters expand, according to Matt Weyrich of the Baltimore Sun. The budding star got a brief taste of the major leagues earlier this summer but struggled as he went 1-for-17 across his first seven major league games. However, at Triple-A this season, the former fourth-round pick posted an incredible .293/.369/.574 slash line with 22 home runs, 23 doubles, and 67 RBI. Even though Mayo struggled through his first stint in the big leagues, fantasy managers should look to add the No.9 prospect in the sport, according to MLB.com, where he is available. He has high power potential and could still find an everyday role in the Baltimore lineup if he settles in at the plate.

Chicago White Sox pitching prospect Jairo Iriarte is set to join the major league roster when the rosters expand, according to James Fegan of Baseball America. Iriarte has spent the entire summer at Double-A and is completely bypassing Triple-A on his way to the big leagues, similar to how fellow White Sox pitching prospect Drew Thorpe did earlier this season. Iriarte has held a solid 3.71 ERA, 1.28 WHIP, and a 57:122 BB:K ratio across 126 innings of work. While the 22-year-old has served as a starter, Fegan reported that he should be expected to be deployed out of the bullpen in his first taste of big league ball. Iriarte currently sits as the No.5 ranked prospect in the White Sox system on MLB.com and could be worth a flier if he is given the opportunity to serve as a spot starter down the stretch.