San Francisco Giants second baseman Christian Koss turned in a big performance in his team's 10-6 win over the Arizona Diamondbacks on Tuesday. Koss went 2-for-4 with a grand slam to help power the Giants to the win over their division rivals. The rookie infielder erased an early 3-0 Diamondbacks lead with his grand slam in the second inning while also accomplishing the rare feat of making his first career homer a grand slam in the contest. Koss is now hitting .241 with one homer, six runs, and seven RBI across 54 at-bats for San Francisco this season. Big game aside, fantasy gamers will need to see a bit more out of Koss at the plate before considering him for starting lineups in the future.

Seattle Mariners catching prospect Harry Ford went 4-for-4 at the plate with a double, a home run, and three RBI during their contest on Tuesday against Triple-A Albuquerque. This was Ford's fourth-straight game tallying multiple hits in a game and fifth-straight game tallying at least one hit. Through his first 27 games at Triple-A, the 22-year-old backstop has looked quite comfortable, holding a .292/.434/.417 slash line with six doubles, two home runs, two stolen bases, and an impressive 24:24 K:BB. Last season, the No. 67-ranked prospect in the sport spent his entire season at Double-A, and held a modest .249/.377/.367 line. However, it appears Ford has taken the next step at Triple-A and is quickly approaching his MLB debut. Given his progress, he should be in the mix to join Seattle in the second half of the season.

Baltimore Orioles catcher prospect Samuel Basallo went 3-for-4 with a double, two home runs, and four RBI during their contest against Triple-A Jacksonville. After starting the Triple-A campaign holding a low .208/.304/.417 slash line, the budding star has begun to flip the script. Over his last six contests, Basallo has posted a stellar .360/.407/.840 slash line. During this stretch, he has tallied three doubles, three home runs, and added seven RBI. Last summer, Basallo struggled during his first taste of Triple-A, posting a modest .222/.267/.370 slash line with just three home runs across 21 games. Fantasy managers should continue to monitor Basallo's production as he should be in the mix to join Baltimore later this summer. He is currently ranked as the No. 16-best prospect in the sport on MLB.com.

Boston Red Sox second base/outfield prospect Kristian Campbell went 1-for-5 with a two-run home run during their loss to the Detroit Tigers on Tuesday evening. Campbell would go deep in the 11th inning. This was his fifth home run of his rookie season. However, entering this contest, the Georgia Tech product was riding an extended slump. Over his previous nine contests, Campbell went 3-for-34 at the plate with one RBI, 11 strikeouts, and no walks. However, prior to this skid, Campbell held an impressive .313/.420/.515 slash line with eight doubles, four home runs, two stolen bases, and a 30:19 K:BB. Fantasy managers should continue to view Campbell as a solid second baseman or outfielder in all formats. He will look to remain productive on Wednesday, facing Detroit ace Tarik Skubal.

Athletics first base prospect Nick Kurtz went 2-for-5 with his first MLB home run during their victory over the Los Angeles Dodgers on Tuesday evening. Kurtz went deep in the eighth inning with a solo shot. This was a much-needed breakout game for the top prospect as he has yet to find his power swing at the MLB level. Entering Tuesday, Kurtz held a solid .269 AVG through his first 16 MLB games. However, during this stretch, he posted a low .327 SLG with a .649 OPS. He tallied just five RBI and held a 23:5 K:BB. Fantasy managers should continue to monitor his status as the A's may continue to limit his opportunities, given his slow start. However, he may have begun to turn the corner. Given his power upside, he should continue to be rostered in all 12+ team formats. He will look to stay hot on Wednesday, facing Yoshinobu Yamamoto.