New York Mets Jacob deGrom Autographed Black Nike Authentic Jersey Size 44 Fanatics Holo #XP14006402. Mill Creek Sports Product ID: 228924. This is a Black Nike Authentic New York Mets Jersey that has been hand signed by Jacob deGrom. This jersey is Size 44. NOTE: There is a stain on the jersey, as shown in the pictures. This item has been certified authentic by Fanatics and comes with their tamper-proof sticker. Item type: The images and description are of the exact item you will receive. We have a full time retail store that has been open in the Seattle area since 1991. Mill Creek Sports 13616 Bothell Everett HWY Mill Creek, WA 98012. Powered by SixBit’s eCommerce Solution.