Quick Hits: Mock Draft, Upton, Papelbon, Verlander, Rondon

Early mock drafts continue to roll out, with MLB.com’s Jonathan Mayo and Jim Callis releasing their first effort at spitballing the always hard-to-call results. The MLB.com team pegs high school outfielder Daz Cameron — son of longtime big leaguer Mike Cameron — as the likeliest current optiton for the Rangers at fourth overall.

Here are a few more notes from around the game:

The Padres expect outfielder Melvin Upton to begin a rehab stint in the near future given the improvement in his foot injury, MLB.com’s Corey Brock writes in response to a reader question. San Diego probably will not have any decisions to make until the start of June, says Brock, which is probably the earliest he’ll be…