The goal was much more down to Branthwaite getting lost on the left than it was down to Patterson, it meant O'brien had to shift to LCB and Patterson to RCB positions.
Didn't see the first 10 mins, but he does seem to lack pace when a winger stands him up, I have noticed that, I do hope thats due to playing while not fully recovered from injury, but you have a point, he's got to be better in the tackle.