He probably won't though as Welker lines up in the slot.
Taylor is typically assigned the best WR to cover all over the field. I expect he will be on Welker.
In a sense, you are both correct.There's been a fair amount of discussion in Pittsburgh this week over whether or not Ike will cover Welker all game because, as moondog says, Ike usually covers the #1 WR, but as Drunken Cowboy says, Welker plays from the slot. Typically, Ike does not cover slot receivers. So this is a fairly unique situation.I lean toward Taylor covering Welker most of the game, but it's just a mildly educated guess. I cannot recall what happened last season specific to Taylor and Welker.