Darvish scratched from start with neck stiffness
Rangers manager Ron Washington said Darvish came in Tuesday for treatment and the team determined he wasn't ready to pitch.
The Rangers announced about 2 1/2 hours before first pitch Darvish was scratched and it is not known when he will make his next start.
"I woke up with a stiff neck," Darvish said in a statement. "I really wanted to throw tonight. It is just unfortunate I can't."
Scott Feldman (6-11) will make Darvish's start Tuesday night against the A's, who entered the day five games behind the first-place Rangers.
The right-hander is 0-5 in his past seven starts and hasn't won since Aug. 4.
Darvish is 16-9 with a 3.90 ERA and has 214 strikeouts, which is third in the AL.
Darvish missed a start Aug. 23 with right quadriceps tightness. Since then, the Japanese rookie is 4-0 with a 1.46 ERA in five starts.
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