There are 25 John Isner trading cards tracked on HobbyCardIndex, spanning Tennis. The most valuable is the John Isner [Purple Sapphire] #92 at $139.99 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/john-isnerJohn Isner Cards
25 cards · Tennis
All John Isner Cards
John Isner [Purple Sapphire] #92
$139.99
John Isner [Frozenfractor] #92
$89.00
John Isner [Black Refractor] #92
$45.00
John Isner [Rose Gold Refractor] #92
$26.95
John Isner [Orange Sapphire] #92
$22.00
John Isner [Gold Sapphire] #92
$12.75
John Isner [Green Grass Court Refractor] #92
$9.99
John Isner [Orange Refractor] #92
$9.78
John Isner [Red Sapphire] #92
$9.38
John Isner [Gold Refractor] #92
$8.73
John Isner [Pineapple Refractor] #92
$7.00
John Isner [Green Sapphire] #92
$5.99
John Isner [Purple] #92
$4.65
John Isner [Sepia Refractor] #92
$3.99
John Isner [Lime Green Refractor] #92
$3.00
John Isner [Blue Refractor] #92
$2.25
John Isner [Aqua Refractor] #92
$1.98
John Isner [Sapphire] #92
$1.82
John Isner #92
$1.59
John Isner [Purple Refractor] #92
$1.49
John Isner [Prism Refractor] #92
$1.47
John Isner [Pink Geometric Refractor] #92
$1.47
John Isner [Clay Court Refractor] #92
$1.39
John Isner [Refractor] #92
$1.10
John Isner [Negative Refractor] #92
$0.74