Hamels has been on the DL since early May with an oblique strain. The left-hander is 2-0 with a 3.03 ERA this season.
The Rangers also will get Joey Gallo back for Monday's game. Gallo had missed the team's past two games because of a hamstring injury.
Outfielder Drew Robinson was optioned to Triple-A Round Rock. He homered for his first major league hit and also doubled Sunday in a 7-6 win over the New York Yankees. Robinson was called up from Round Rock on Saturday.
The Associated Press contributed to this report.