Jordan Lawlar

Diamondbacks manager Torey Lovullo said Wednesday that Lawlar recently aggravated his strained left hamstring and will be sidelined an additional 6-to-8 weeks, Jesse Friedman of GoPHNX.comreports.

The 21-year-old infielder is expected to miss an additional six-to-eight weeks with this setback. Lawlar had been on the recovery trail from a Grade 1 hamstring strain that he suffered in mid-June. Now there's a chance that we may not see him playing competitive games again until September.

Arizona sent Lawlar (hamstring) on a rehab assignment to the Arizona Complex League Diamondbacks on Saturday, Alex Weiner of ArizonaSports.com reports.

Lawlar has missed the majority of the first half due to injury, so it's a positive sign that he's ready to return to game action after being shelved back in mid-June with a Grade 1 hamstring strain. The 21-year-old shortstop remains one of the top fantasy prospects in the game and figures to be back in action at Triple-A Reno in a few days.