Answer
15 was the number worn by Crabtree with the 49ers. Michael Crabtree, a wide receiver, played for the San Francisco 49ers from 2009 to 2014. During his time with the team, he wore the number 15 on his jersey. Crabtree was a key member of the 49ers' offense, helping the team reach the NFC Championship Game in 2011 and 2012. He was also named to the Pro Bowl in 2012.