Verified Authentic, Collector Grade autographed and signed memorabilia: Mariano Rivera–signed game-used Arizona League baseball authenticated by Beckett (BAS). Widely regarded as the greatest closer in MLB history, Rivera is the all-time saves leader (652), a five-time World Series champion with the New York Yankees, and the first unanimous Hall of Fame inductee (2019). He also captured the 1999 World Series MVP and 2003 ALCS MVP honors, underscoring his postseason dominance.

Collector's Highlights:

• Athlete: Mariano Rivera
• Item: Game-used Arizona League baseball (game use not independently authenticated), hand-signed; BAS #BV70299
• Authentication: Beckett Authentication Services (BAS) hologram sticker with scannable QR code

This piece is verified by Beckett Authentication Services, a leading third-party authority whose tamper-evident hologram and QR code provide enduring verification and support long-term collectible value. Note: while the ball shows game-use wear consistent with era exemplars, the game use itself is not separately authenticated. A trusted, collector-grade Rivera signature from the Yankees legend, ideal for discerning collections focused on authenticated excellence and Hall of Fame legacy.