Bobby on the Ice is a reference to Bobby Orr, a legendary Canadian ice hockey player. He is best known for his time with the Boston Bruins, where he won two Stanley Cups and was awarded the Norris Trophy eight times. Orr's nickname was 'Number 4' and his last name is three letters long, so the crossword solution for ORR is correct. Additionally, Axel is a figure skating jump that requires a skater to take off from the back inside edge of one foot and land on the back outside edge of the other foot. This jump is four letters long, so the crossword solution for AXEL is also correct.