CINCINNATI — Edwin Encarnacion has been placed on the 15-day disabled list after tests found that the Cincinnati Reds third baseman has a chipped bone in his left wrist.

Encarnacion has been bothered by the wrist since spring training, when he also was slowed by a sore right shoulder on his throwing side. He struck out in the ninth inning of a 4-1 loss to Houston on Monday night, extending his slump to 1-for-28.

Encarnacion appeared to aggravate the wrist in his last at-bat on Monday, prompting the Reds to send him for tests.

‘‘You never know until you do the tests,’’ manager Dusty Baker said. ‘‘I don’t know if he did it on the last swing yesterday or before. I saw him wince in his last at-bat.’’

The Reds called up infielder Adam Rosales from Triple-A Louisville to take his spot. Rosales was batting .431 with four homers and 15 RBIs in 17 games. He played in 18 games for the Reds last season, batting .207 without a homer.

It was the first roster move of the season for the Reds, who also were missing left fielder Chris Dickerson on Tuesday.