Ball pitched five shutout innings, allowing two hits while striking out four and walking none on Saturday for Low-A Greenville. It was the third time in four starts he's pitched five innings and allowed one or fewer earned runs.
Nava was moved up to second in the batting order and went 2-for-3 with a walk and three RBI in Sunday's win over Kansas City. Since being recalled from Triple-A Pawtucket, Nava is hitting .337 with a .421 on-base percentage.
Betts will continue to get exposure in right field and center field with Triple-A Pawtucket, ESPN Boston reports. He was optioned to Pawtucket on Saturday to make room for the return of Shane Victorino from the disabled list.
Victorino, who went 1-for-3 in his return to the lineup Saturday after a long stint on the disabled list, will not be an everyday player immediately, the Providence Journal reports. Manager John Farrell said after Saturday's game that Victorino would be closely monitored and be given periodic breaks initially.