This article originally appeared on steelersnow.com.
Alexander did not practice this week with a shoulder injury. He played the whole game for the Packers against the Los Angeles Rams in Week 9, but has missed three games this season while battling multiple injuries. Rookie Carrington Valentine is in line to make his fifth career start in place of Alexander.
Walker also did not practice all this week. He has been dealing with a groin injury and will most likely miss his second straight game. In seven games, Walker has 66 tackles, five for a loss, one quarterback hit, three passes defended and one interception that he returned for a touchdown. Kingsley Enagbare will likely replace Walker in the starting lineup once again.
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