BOSTON — Tampa Bay Rays third baseman Junior Caminero started both games of a doubleheader at Fenway Park on Friday, just days after a 97.6 mph pitch struck his left hand at the All-Star Game in Philadelphia, and answered any lingering questions about his health by crushing his 29th home run of the season in the nightcap.

The 23-year-old two-time All-Star launched a 111.6 mph solo shot over the Green Monster off Red Sox lefty Eduardo Rivera in the third inning of Game 2, his 14th homer in his last 21 games. The blast came in a 5-3 Rays loss that completed a doubleheader sweep by Boston, which opened the twin bill with a 10-0 rout.

“Everything’s OK. Everything’s good,” Caminero said before the games. “A little bit sore the last two days.”

Caminero wore a protective guard on his left hand while batting and a mitt on the same hand while running the bases — gear he said he will now use every day. His swing on the home run clocked in at 81.4 mph bat speed, giving him 36 homers with a bat speed of at least 80 mph since the start of last season, eight more than any other hitter in the Majors during that span.

“I really wasn’t putting a ton of thought into it,” Rays manager Kevin Cash said of the decision to play Caminero. “It’s probably gonna be a little sore, but hits make soreness go away.”

X-rays taken at Citizens Bank Park after Cardinals right-hander Riley O’Brien hit Caminero in the third inning of the All-Star Game came back clean. Cash said he FaceTimed with Caminero in the American League clubhouse and received updates from senior director of communications Elvis Martinez, who was on the scene. Rays closer Bryan Baker, who recorded the final out of the All-Star Game for the AL, said he spent the final six innings in the bullpen fearing the worst.

“I was basically panicking for a solid two hours, hoping he was OK,” Baker said. “That was probably the biggest relief of the entire week was getting back in the clubhouse and finding out that everything was OK.”

In Game 1 at Fenway, Caminero ripped a 106 mph line drive caught by fellow All-Star Ceddanne Rafaela in center field, then pulled a 105.8 mph single to left for Tampa Bay’s first hit of the game. He had played in each of the Rays’ first 94 games before the All-Star break without missing a start at third base.

“Thank God [I’ve] stayed healthy, because if I stay healthy, I can play,” Caminero said. “When you’re healthy, good things happen.”

Caminero said he enjoyed his second trip to the Midsummer Classic despite the early exits from both the Home Run Derby and the game itself, recounting conversations with Mike Trout and Justin Verlander. He told Verlander, who made his Major League debut the day before Caminero turned 2 years old, “As a young kid, before signing, I followed you. Now, we’re playing together today in the All-Star Game.”

“Hopefully he’s in for eight games,” Cash said, referring to the Rays’ stretch of eight games over seven days in Boston and Toronto that begins with the current series.