Justin Herbert has appeared to injure his throwing hard during the second half of the Los Angeles Chargers matchup against the Arizona Cardinals on Monday. ESPN sideline reporter Molly McGrath was able to provide a brief update on the Chargers quarterback, who did not miss any time with his hand bothering him. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! “After LA’s last drive, Justin Herbert came to the sideline, immediately signaled to their medical staff to look at his right hand,” McGrath said. “They looked closely at his thumb an…