By Steve Rushin The year gave us countless uplifting moments that reminded us why we love sports. And it also gave us these. AND AFTER ALL, THEY GO UNDER WALLClippers guard John Wall released his own line of underwear. IF YOU CAN KEEP YOUR HEAD WHEN ALL ABOUT YOU ARE LOSING THEIRSRavens mascot Poe suffered a season-ending knee injury while playing in a youth football exhibition at halftime of the Ravens-Commanders game, yet managed to hold his head on as he was carted off the field in agony. TROT NIXIN’A junior college pitcher in Texas was dismissed from the team after tackling a home run hitt…