The Cubs activated Imanaga (hamstring) from the 15-day injured list Thursday.

Imanaga is set to rejoin the Cubs' rotation Thursday with a start in St. Louis after being out since early May with a strained left hamstring. The left-hander threw 72 pitches and went 4.1 innings in his final rehab outing with Triple-A Iowa, so he's likely to have a somewhat limited workload against the Cardinals.

Brown could see his workload reduced a bit at Triple-A Iowa as the Cubs seek to keep him fresh for an eventual return to the majors, Jordan Bastian of MLB.com reports.

Brown is slated to still start games for the Iowa Cubs, though he could face an innings limit or potentially see some work in long relief. The team also wants the young righty to keep developing his changeup and improve his control, as he walked 27 batters in 79.1 innings for Chicago before his demotion. Brown has the stuff to make an impact again in the majors this season, though fantasy managers will likely need to be patient.

Burrows is scheduled to start Sunday against the Mets after he pitched 2.1 scoreless innings out of the bullpen in Wednesday's 4-2 loss to the Brewers, Colin Beazley of the Pittsburgh Post-Gazette reports.

Burrows came on to make his first relief appearance for the Pirates this season after starter Paul Skenes lasted a career-low four innings Wednesday. As a result, the rookie right-hander's turn in the rotation will be pushed back a couple days, and he will take the ball Sunday on three days rest.

Webb allowed two runs on six hits and three walks while striking out six batters over six innings in a no-decision against Miami on Wednesday.

Webb yielded a pair of runs in the second frame but otherwise kept the Marlins off the scoreboard. The right-hander walked three batters for the second time in his past three outings, but none of those free passes resulted in a run. Webb is an NL Cy Young contender at this point in the campaign, posting a 2.52 ERA, 1.14 WHIP and 120:23 K:BB over 17 starts spanning 107.1 innings. He's registered six consecutive quality starts and is tied for first in the league in that category with 13 on the season.

Cabrera allowed two runs on three hits and three walks while striking out six batters over 5.1 innings in a no-decision against San Francisco on Wednesday.

Cabrera served up a solo homer to the first batter he faced, but he was relatively good after that, yielding just one more run over the remainder of his outing. The right-hander tossed 54 of 90 pitches for strikes and notched a healthy six punchouts -- breaking a streak of four straight outings with exactly five strikeouts -- but didn't get enough run support while he was in the game to get the win. Cabrera hasn't allowed more than two earned runs in any of his past six starts, and he's posted a 1.80 ERA, 1.23 WHIP and 36:15 K:BB over 30 frames during that stretch.

Dollander (2-8) took the loss against the Dodgers on Wednesday, allowing three runs on three hits and two walks while striking out one batter over 5.2 innings.

Dollander got through five scoreless frames before being charged with three runs in the sixth. However, those runs weren't entirely his fault -- he would have gotten the third out of the inning without allowing a run, but heavy rain impeded the catch on a Max Muncy infield popup and allowed the ball to drop, scoring two runners. Muncy eventually came around to score, posting another tally on what was nearly a strong line for Dollander. The rookie right-hander has no wins over his past eight starts, going 0-5 with a 5.79 ERA across 37.1 innings during that stretch.

Yamamoto (7-6) earned the win over Colorado on Wednesday, allowing one hit and one walk while striking out six batters over five scoreless innings.

Yamamoto needed just 56 pitches -- 39 of which were strikes -- to finish five scoreless frames, He almost certainly would have gone longer if not for a rain delay that lasted for about an hour and a half. Despite the weather-shortened outing, Yamamoto managed to pitch just long enough to qualify for the win, and the victory was his first since May 26 -- a span of five starts. The right-hander owns an outstanding 2.61 ERA on the campaign, and his next start is slated to be a prime matchup against the White Sox at home next week.

Fedde (3-7) was saddled with the loss Wednesday against the Cubs, giving up seven runs on eight hits and two walks in 3.2 innings. He struck out two.

It was the second-shortest outing of the season for Fedde, who tied his season worst in runs allowed. The 32-year-old right-hander served up a season-high three home runs, and the eight hits against him were also his most allowed since his sixth start of the year back on April 27. Fedde will take a pedestrian 4.11 ERA, 1.36 WHIP and 57:38 K:BB over 87.2 innings into his next scheduled appearance against the Pirates, who have MLB's lowest OPS (.636) since the beginning of May.

Wheeler (7-3) took the loss against Houston on Wednesday, allowing one run on four hits and three walks while striking out eight batters over six innings.

Despite walking three batters for the second straight game, Wheeler was very good Wednesday, holding the Astros to only a first-inning run and notching eight punchouts. However, Philadelphia was unable to put any runs on the board, sending Wheeler to his third loss of the campaign. The right-hander did manage to log his fourth straight start allowing one or zero earned runs, and he's posted an excellent 32:7 K:BB over 23 innings during that span. Wheeler's next scheduled start is tentatively slated to be at home against San Diego.

Singer (7-6) took the loss against the Yankees on Wednesday, allowing four runs on six hits and three walks with nine strikeouts over five innings.

Singer allowed runs in three separate innings but managed a season-high nine strikeouts in a losing effort. It was the first time in eight starts this year that the 28-year-old surrendered more than three earned runs, though he's issued at least three walks in six of those outings. He'll carry a 4.31 ERA, 1.33 WHIP and 76:36 K:BB across 85.2 innings into a road matchup with the Red Sox next week.