Two games on this afternoon: Shakhtar Donetsk takes on Barcelona at Donbass Arena, and Manchester United hosts Chelsea at Old Trafford Stadium. They both start at 2:45, and with Chelsea down a goal on aggregate, they must win to advance. But Wayne Rooney, threat to already-cursing children everywhere, is allowed to play in Champions League games , and he's totally ready to be martyred. The Barca game might not have the same top billing, but it is Barca, and it is a warm-up for a potential semi-final match with Real Madrid — a game that makes our own Brian Hickey "tingle inside with joy." Enjoy.