The numbers strongly indicate Johan Santana hasn't been the same pitcher since tossing the first Mets no-hitter seven weeks ago. But the Mets are citing a more recent ankle injury — and its effects on his tiring arm — for shutting down their erstwhile ace on Saturday.

Admitting his sprained right ankle has led to "some fatigue" in his surgically repaired left shoulder, the Mets placed Santana on the 15-day disabled list Saturday before their 8-5 loss to Dodgers at Citi Field.

"Johan, I think, has exhibited the effects of 100 innings and a sore ankle the last couple of starts. We think the ankle injury may have led to some general fatigue in the shoulder, specifically," general manager Sandy Alderson said. "In light of the surgery, where he's been and what he's accomplished, we've gotten to the point that he probably needs to get that ankle right and get back to the point where he feels confident about pitching."

Santana insisted multiple times after the game that his shoulder was "fine," and that any decline on the mound was the result of "compensating" for his sprained right ankle.

Still, since throwing 134 pitches in the elusive first no-no in the Mets' 50-year history on June 1 against St. Louis, Santana has a 6.54 ERA over eight starts. He gave up six earned runs in three innings in Friday's 7-6 defeat to the Dodgers.