Rivera autographed this ball on the sweet spot and inscribed "Game 5 Save last out ball vs Oakland 2001". Rivera used this ball to strike out Athletics outfielder Eric Byrnes to clinch a series victory for the New York Yankees and a berth in the American League Championship Series. The Yankees found themselves down 2-0 in the series before winning three consecutive games in a dramatic series with the A's. This autographed game used baseball comes with a Mariano Rivera letter of authenticity. . Product: Ball,Sport: Baseball-MLB,Autograph Authentication: James Spence Authentication (JSA),Team: New York Yankees,Player: Mariano Rivera,Original/Reprint: Original,Country of Origin: United States