His elbow injury , however , prevented him from defending it , and the title was stripped from him .
Cooper won his second belt shortly before he fought Clay , and in 1964 claimed the European title for the first time .
Cooper 's elbow injury , however , prevented him from defending it , and the title was stripped from him .
Cooper won his second belt shortly before he fought Clay , and in 1964 claimed the European title for the first time .