Cobbs attended Concordia Academy High School in Roseville, Minnesota, where she played volleyball, basketball, and softball.[2] She made the all-state team twice in both volleyball and basketball.[2] In 1984, she led the volleyball team to the Class A state championship.[2] In 1985, she was named the Metro Basketball Player of the Year.[2]
College
Cobbs played for the North Dakota State University volleyball team from 1985 to 1988.[2] She was a second-team All-American in 1986 and a first-team All-American in 1987.[2] In 1988, Cobbs led the Bison to a 43–3 record and an NCAA Elite Eight appearance.[2] She was named to the All-American first team again and was also named the Division II Player of the Year.[2] She won the Honda-Broderick Trophy in 1988–89 as the Division II Female Athlete of the Year.[2] Cobbs set nine NDSU school records, including most career kills (2,091) and most single-season kills (739).[2]
Cobbs was inducted into the North Dakota State University Hall of Fame in 2003.[3]
International
Cobbs was a member of the national team from 1989 to 1994.[2] She won the bronze medal with the national team at the 1992 Summer Olympics in Barcelona.[2] She was named the MVP of the 1992 Hong Kong Cup.[2]
Professional
Cobbs played professionally for the Minnesota Monarchs (U.S.) in 1988–89, Ceramica Magica (Italy) in 1993–94, and Vakifbank (Turkey) in 1996–97.[2]