Yes, but Cora will also have Houck available for tonight. I was impressed with his 3 shutout innings (and 49 pitches) vs. the Yankees last Friday. Whitlock will also be available, so I don't see Richards getting a lot of leeway tonight unless the Sox run out to an early and big lead.
On the other hand, Richards has made some adjustments, and in his 2 July starts he went 5 vs the A's, giving up 2 ER's, and 5 vs. the Phillies, giving up 3 ER's. He starts tonight with 11 days rest.