Cashner (10-11) was roughed up for eight runs (but just one earned) on six hits and two walks with two strikeouts over 3.2 innings and took the loss Monday to the Astros.
Cashner wasn't helped by his defense, but he pitched poorly despite the two errors. He managed just nine first pitch strikes to 22 hitters and mustered just five swinging strikes in 82 pitches. Cashner has failed to finish the fifth inning in two of his past three starts after throwing at least six innings for four straight outings.
McHugh (4-2) struck out six batters and allowed two runs on seven hits and three walks through five innings to earn the win Monday night over the Rangers.
McHugh hasn't completed the sixth innings since August 25th in Los Angeles. At this point, the Astros seem to be relying on McHugh to give his all over short bursts and are willing to count on their bullpen to finish the rest of the game. He has been effective despite his short starts, as McHugh has allowed just six earned runs over his last four outings.
Olson has a Grade 2 hamstring strain and will miss the rest of the season, Jane Lee of MLB.com reports.
Olson hit 24 home runs in just 59 games this season to establish himself as Oakland's first baseman of the future. Expect him to be healthy and good to go for spring training.
Weaver (7-2) allowed eight runs on seven hits and two walks while striking out just three batters through only three innings to take the loss to the Cubs on Monday.
This was a disastrous outing from the 24-year-old righty, but it was also his lone hiccup in an otherwise awesome late-season surge. After all, Weaver entered Monday's outing with an elite 2.05 ERA, 1.03 WHIP and 11.1 K/9 through 52.2 innings over 11 appearances. Even with Monday's disappointing showing, gamers should expect Weaver's fantasy stock to soar leading into next season's draft season. He projects to make his final start of 2017 against the Brewers at Busch Stadium.
Lester (12-8) allowed a single run on five hits and two walks while striking out four batters through six innings to pick up the win against St. Louis on Monday.
The veteran lefty entered Monday's divisional tilt with an underwhelming 5.91 ERA, 1.83 WHIP and 5.9 K/9 through four September starts, so this was an impressive rebound. Lester's 4.20 FIP is his highest mark since the 2007 season, and this has been a disappointing fantasy campaign. However, with Chicago close to clinching a playoff berth, Lester and the Cubs have larger goals in sight. He projects to face Cincinnati at Wrigley Field for his final start of the regular season, but there's a risk that the veteran lefty could be skipped if Chicago clinches its postseason berth in the meantime.