What I said on July 23:

4. Cruz’s speech: F- Judas! Judas! Judas! [shakes pieces of silver]. Endorsed Trump, but not explicitly. Coward. Made it all about himself, which is what was terrible. Totally inconsistent and incoherent message. Reminds me of 1892 Dem platform: ready to be hijacked.

I did not predict an explicit endorsement, but his convention speech was clearly an implicit one.