Dave Sims is replacing John Sterling as Suzyn Waldman’s play-by-play partner on New York Yankees radio broadcasts

Dave Sims, who has spent the past 20 years calling Mariners games, will replace John Sterling as Suzyn Waldman's play-by-play partner on Yankees radio broadcasts.

Sims, known for signature calls such as “Hey now” and “Giddy up, baby,” has been the Mariners’ television play-by-play man since 2007. The Philadelphia native will now join the 78-year-old Suzyn Waldman, Sterling’s longtime broadcast partner, in the Yankees’ radio booth. WFAN is close on a deal to hire Dave Sims as John Sterling’s replacement.