Roddick set for fourth run-in with Australian Open official?

Question

First there was the collision with the linesperson in the first round, and in his second two matches Andy Roddick saw fit to engage the chair umpire in some lively discussions about a couple of decisions on match points. What’s in store for his fourth round match against Fernando Gonzalez? The American will be hoping it’s a victory as he seeks a second career Grand Slam title, but surely he’ll keep his distance from the officials this time around.