Every player's career ends at some point. I hold no negative thoughts about Phil Hughes but the time appears to have come.
I was at Steve Carlton's last major league game in 1988. He made an unsuccessful appearance out of the bullpen and when he was pulled I stood up and applauded and yelled, "Great career, Lefty!" His 1972 season is considered by many to be the best season ever by a starting pitcher. He was 27-10 with a 1.97 ERA for a team that went 59-97.