A Ivan Rodriguez single signed baseball is worth about $60.-$90.
Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been properly authenticated could sell at half the market value or less. Add for inscriptions. In a recent auction a Ivan Rodriguez single signed baseball sold for $83.65. For more prices on single signed baseball see Related Links below.