Los Angeles Dodgers pitcher Gavin Stone limited the Seattle Mariners to two hits while striking out a career-high 10 over seven innings in Monday's 3-0 win. Stone, who improved his record to 11-5, allowed a pair of walks during his 90-pitch gem. He has won his last two decisions after going winless from June 26 to August 13. Stone has a 3.44 ERA and a 1.24 WHIP with 105 strikeouts and 34 walks over 128 1/3 innings. Fantasy managers will get a second start this week from Stone when he faces the visiting Tampa Bay Rays at Dodger Stadium on Sunday.

Toronto Blue Jays first baseman Vladimir Guerrero Jr. continued his torrid second half in Monday's 6-3 loss to the Reds. Guerrero Jr. went 1-for-3 with a solo home run. He was also hit by a pitch. The 25-year-old quickly welcomed Julian Aguiar to his first career big-league start, demolishing a first-inning breaking pitch into the second deck of the left-field seats. Guerrero Jr. has provided top-tier fantasy production in the second half of the season, slashing .413/.488/.881 with 12 HR and 26 RBI in 109 at-bats. His power boost could be due to raising his average launch angle up to 9.8 degrees in the second half, which would be the second-highest mark of his career.

Houston Astros starting pitcher Yusei Kikuchi continued to showcase his strikeout potential in Monday's 5-4 win over the Red Sox. Kikuchi pitched 5 2/3 innings, allowing three runs (one earned) on six hits (including a solo home run) and a walk with seven strikeouts. The 33-year-old is now 6-9 on the season with a 4.37 ERA, a 10.50 K/9 rate, and a 2.41 BB/9 rate in 26 starts and 138 IP. He has looked much better in his four starts since joining the Astros, compiling a 2.42 ERA with 31 strikeouts. He has yet to pitch six innings, but fantasy managers have to be encouraged by his recent performance with his new team. Kikuchi will face a tough matchup in his next start at his ex-division Orioles. Fantasy managers may consider sitting Kikuchi despite his recent success.

Houston Astros catcher Yainer Diaz played the hero in Monday's 5-4 win over the Red Sox. Diaz, who played first base and catcher, went 2-for-5 with a single, a walk-off solo home run, and a strikeout. The 25-year-old connected with a Kenley Jansen pitch and sent it off the top of the back left-field wall in the bottom of the ninth inning to give the Astros the win. Diaz has been a fantasy asset in the second half of the season, slashing .345/.372/.593 with seven HR and 21 RBI in 113 second-half at-bats. He should continue to be in fantasy managers' lineups at all times when he is in the lineup, given his production at a weak fantasy position.

Kansas City Royals relief pitcher John Schreiber picked up his second save of the season in Monday's 5-3 win over the Angels. Schreiber entered the game to pitch the top of the ninth inning up by two. He allowed a leadoff single, induced a groundball double play, and ended the game on a line-out. The Royals have only seen four save opportunities in the last 15 days, with half of them going to Lucas Erceg. Erceg pitched 1 2/3 innings in Sunday's game, so Schreiber got the call in the ninth on Monday. The 30-year-old now owns a 4.02 ERA with two of five save opportunities converted, a 7.11 K/9 rate, and a 3.08 BB/9 rate. Erceg still seems like the arm to roster for fantasy managers unless Schreiber continues to see high-leverage situations.