Boston’s Rob Refsnyder, center, celebrates with teammates after his RBI single in the 10th inning lifted Boston to a win over the Texas Rangers at Fenway Park on Monday in Boston. Charles Krupa/Associated Press

BOSTON — Rob Refsnyder hit a game-winning single with two outs in the 10th inning after pinch-hitter Enmanuel Valdez’s double tied the score, lifting the Boston Red Sox to a 5-4 victory over the fading Texas Rangers to snap a four-game losing streak Monday night.

The Red Sox were coming off a three-game sweep by Houston last weekend, when they were outscored 23-10.

Corey Seager had a tying, two-run homer for defending World Series champion Texas (55-64), which lost for the ninth time in 12 games to fall a season-low nine games under .500.

With automatic runner Romy Gonzalez on second, Valdez hit a drive to the edge of the triangle in right-center off Gerson Garabito (0-1) that just got past Leody Taveras and bounced into the stands for a ground-rule double.

Nick Sogard blooped a single to center and Mickey Gasper drew a one-out walk in his major league debut against Walter Pennington to load the bases. Following a force at home on Masataka Yoshida’s grounder, Refsnyder hit a 2-0 pitch for the winner.

Josh Winckowski (3-1) got the victory.

Josh Smith’s grounder to shortstop drove in automatic runner Marcus Semien from third in the top of the 10th.

Texas closer Kirby Yates struck out Refsnyder with the bases loaded to end the eighth.

Rangers reliever Andrew Chafin walked home two runs to give Boston a 3-1 edge before Seager hooked Bailey Horn’s first-pitch sweeper into the seats in right field in the seventh.

With the score tied at 1 in the fifth, Chafin replaced starter Tyler Mahle with a runner on second and two outs. Chafin fell behind Rafael Devers 3-0 before manager Bruce Bochy elected to intentionally walk him.

Chafin threw a wild pitch, advancing both runners, before Connor Wong was intentionally walked to load the bases. Chafin then walked Gonzalez and Danny Jansen, forcing home two runs.

After coming off the paternity list before the game, Boston starter Brayan Bello gave up one run and four hits in six innings. He struck out five and walked three.

Red Sox shortstop David Hamilton stole his 30th base, joining Jacoby Ellsbury in 2008 and Amby McConnell in 1908 as the only rookies in club history to reach that mark.

Mahle was charged with two runs and three hits in 4 2/3 innings. He struck out seven and walked three.

NOTES: Red Sox SS Trevor Story took live batting practice on the field for the first time as he works back from April shoulder surgery much quicker than expected. He’s been taking grounders for a while and hitting seems to be the last step before he goes on a rehab assignment. He was originally thought to be out for the season after surgery. … 3B Rafael Devers was back in the lineup after having Sunday off.