Houck was placed on the 15-day injured list Tuesday, retroactive to Aug. 6, with lower-back inflammation.

EDGE Analysis

Houck hasn't seen the mound since pitching back-to-back games on the first two days of August, so it's unclear when exactly he suffered the injury. The 26-year-old has been operating as Boston's primary closer, and Garrett Whitlock and John Schreiber are the likely candidates to step in while Houck is sidelined.

Houck saved Tuesday's 2-1 win against the Astros, tossing 1.2 perfect innings. He failed to record a strikeout.

EDGE Analysis

Houck was brought in with two on and one out in the bottom of the eighth and escaped the jam on just four pitches, then delivered a 1-2-3 frame in the ninth for his second save in as many days. Manager Alex Cora's use of the 26-year-old for consecutive saves cements his status as Boston's primary closer after Garret Whitlock picked up two saves at the end of July. Houck possesses a 3.15 ERA and 1.18 WHIP with 56 strikeouts in 60 innings, with eight saves in 32 appearances.

Houck fired a perfect ninth inning, striking out one to earn the save in Monday's 3-2 win over the Astros.

EDGE Analysis

Houck had allowed a run in each of his last two appearances, but he was sharp after going four full days between outings. The save was his first since June 25 -- that's a product partly of his own shaky performance but mostly from the Red Sox's brutal July swoon. The right-hander has a 3.24 ERA, 1.22 WHIP and 56:22 K:BB in 58.1 innings with seven saves, a blown save and a hold through 31 appearances (four starts).

Houck (5-4) allowed a run on one hit in one inning, taking the loss Wednesday versus the Guardians.

EDGE Analysis

Houck entered with the game tied at 6-6 and gave up a solo home run to Josh Naylor. That ended up being the deciding run. Houck has surrendered a run in three of his last five outings, and he hasn't earned a save since June 25 as the Red Sox have slumped to the bottom of the AL East. The right-hander owns a 3.30 ERA, 1.24 WHIP and 55:22 K:BB with six saves in 57.1 innings across 30 appearances (four starts) this year.

Houck (5-3) recorded the win in Friday's 5-4 extra-innings victory over the Yankees after blowing his first save of the season, allowing an unearned run on two hits and two walks over two innings. He also hit a batter with a pitch and didn't get a strikeout.

EDGE Analysis

Entrusted with a 4-3 lead in the ninth inning, Houck put the first two batters of the inning aboard before throwing the ball wide of third base on what was intended to be a sacrifice bunt by Isiah Kiner-Falefa, allowing Gleyber Torres to score the tying run. The right-hander avoided any more damage thanks to double plays in the ninth and 10th, however, and he was still the pitcher of record when Boston scored in the top of the 11th. Houck hasn't picked up a save since June 25, but for now he still appears to be manager Alex Cora's first choice to close out games.

Houck was reinstated from the restricted list Thursday, Bill Koch of The Providence Journal reports.

EDGE Analysis

Houck will return to the team following their series in Toronto, which he was unavailable for because of his vaccination status. He'll return to manning the backend of the Red Sox bullpen as the team starts a series against the Cubs on Friday.

The Red Sox placed Houck (personal) on the restricted list Monday.

EDGE Analysis

Houck's placement on the list was fully expected, as he was previously inactive for the Red Sox's series in Toronto in late April due to his vaccination status. Since Houck remains unvaccinated two months later, he won't be eligible to cross the Canadian border and will be unavailable for the entire three-game series in Toronto. John Schreiber and Matt Strahm look like the top options to pick up saves before Houck returns to the fold for the Red Sox's three-game series against the Cubs this weekend.

The Red Sox are expected to place Houck on the restricted list prior to Monday's series opener in Toronto, Julian McWilliams of The Boston Globe reports.

EDGE Analysis

Because he remains unvaccinated against COVID-19, Houck won't be eligible to cross the Canadian border and will miss the Red Sox's second series of the season in Toronto after he was previously unavailable for the four-game set at Rogers Centre in late April. While the team is in Canada, Houck will throw a live batting practice session in Boston to stay sharp before he's eligible to rejoin the Red Sox in Chicago for their series with the Cubs that begins Friday. Houck has emerged as Boston's preferred option at closer over the past three weeks, but John Schreiber and Matt Strahm will likely represent the best bets to pick up save chances during the Toronto series.

Houck earned the save against the Guardians on Saturday with a perfect inning of work.

EDGE Analysis

Houck needed only seven pitches -- six of which were strikes -- to set the side down in order in the ninth inning. For the first time in 10 contests, the right-hander failed to record a strikeout, but that's of little concern given the results. Houck has notched a save in six of his past seven appearances and has gained a stranglehold on Boston's closer role with a 1.69 ERA and 14:1 K:BB over 10.2 innings since the start of June.

Houck allowed one run on three hits while striking out two over the ninth inning of Friday's 6-3 win over the Guardians.

EDGE Analysis

With the Red Sox leading 5-2 to start the ninth inning, Houck was warming up for a potential save but didn't get the opportunity after Boston plated a run in the top half of the frame. Houck is set to miss the three-game series in Toronto that begins Monday, so the Red Sox may get him work this weekend regardless of the situation to keep him fresh.