Traditionally, the role of a sports TV game analyst is a former player or coach from the same sport. Here is a summary of athletes who played professionally (or at the major collegiate level) in one sport and worked as a TV analyst in that sport, but also worked as an analyst on a national TV network in a different sport.
Note: Several ex-athletes have become play-by-play announcers, hosts, or sideline reporters in another sport, but this post focuses on the unusual case of "crossover" game analysts.
- CBS used Frank Gifford (football) as an analyst on the college basketball NIT in the 1960s.
- Pat Summerall (football) served as the CBS analyst on some ABA games in the early 1970s as well as on the NIT.
- Sonny Jurgensen (football) was the CBS analyst on some 1976 NBA playoff games.
- Kyle Rote Jr (soccer) worked as a college football analyst for the USA Network in the 1980s.
- Steve Grote (college basketball) analyzed some college football games for CBS in 1983.
- Irv Brown (college basketball player and referee) worked as an analyst on some college football games for ESPN.
- While this is stretching the definition of "athlete", I will note that NBC used professional "wrestlers" Jesse "The Body" Ventura and Jerry "The King" Lawler as XFL analysts in 2001.
- NBC added Don Meredith (football) as a guest commentator to the TV booth for one Monday Night Baseball game in 1974.
- Jay Walker (football) worked as an ESPN analyst for some College World Series regionals.
- CBS used Tom Brookshier (football) as a boxing analyst on a few bouts in 1976 including a heavyweight title fight with Summerall on play-by-play.
- Both ABC (1976) and NBC (1992) used OJ Simpson (football) as a track and field analyst on sprint events.
- Phil Simms (football) served as the NBC weightlifting analyst for the 1996 games.
- TNT utilized Mick Luckhurst (football) as an analyst on the 1990 World Cup.
Golf is a bit trickier as the line between play-by-play and analyst is less clear-cut. But here are some athlete/analysts from other sports who also worked in the golf TV booth:
- Tony Trabert (tennis)
- Don Sutton (baseball)
- Rick Barry (basketball)
- Terry Gannon (college basketball)
- Bob Trumpy (football)
- Pat Haden (football)
- John Brodie (football)
- the aforementioned Gifford and Summerall
Note: Brodie did compete on the Senior PGA Tour, but since he called golf on TV prior to that stint, I included him on the list.