Overview: Former NFL player Esera Tuaolo discusses keeping his homosexuality hidden during his career. Also: an interview with attorneys Johnnie Cochran and Cyrus Mehri, who have criticized the NFL for not hiring more African-American coaches; a report on the decline of physical-education classes in schools; and a profile of Rodney Cummings, who credits youth boxing for helping him go from jail at age 18 to a prosecuting attorney in the same town. Correspondents include Bernard Goldberg and Jim Lampley.