Jacksonville quarterback Byron Leftwich broke his left ankle on the Jaguars' first offensive play against Arizona on Sunday and will be sidelined at least four weeks. Leftwich was hurt when he was sacked by a group of Arizona players, a sack that was nullified by a penalty against the Cardinals. He stayed in the game for four more plays, then left for the game, won by the Jaguars 24-17 behind backup quarterback David Garrard. "The best-case scenario is about a month out, depending on how quickly he heals, and it could be worse. We just won't know until we see how the injury heals," coach Jack Del Rio said after the game.