Jannik Sinner Autographed Tennis Ball – With Plexiglass Display Case – COA Included

Jannik Sinner's Autographed Tennis Ball: A Unique Piece of Tennis Memorabilia

An authentic relic of extraordinary collectible value for every tennis enthusiast: the official tennis ball autographed by Jannik Sinner with a black marker, preserved in its transparent plexiglass case that ensures its protection and optimal display. The ball features the word "Sinner" vertically on its side and the original autograph of the South Tyrolean champion — a large, bold signature, perfectly legible on the yellow felt. The high-quality cylindrical plexiglass case is included in the price, making this piece instantly and elegantly displayable on any desk, bookshelf, or collector's cabinet. Excellent condition, impeccable preservation. A piece destined to significantly increase in collectible value over time, linked to the greatest Italian tennis player of all time.

The Champion: Jannik Sinner

Jannik Sinner (born in San Candido, August 16, 2001) is the greatest Italian tennis player of all time and one of the greatest champions of his generation in the global tennis scene. World No. 1 in the ATP rankings, he won his first Grand Slam at the Australian Open 2024 and repeated the success at the US Open 2024, becoming the first Italian in history to win two Grand Slam titles. In the same year, he led Italy to victory in the Davis Cup, the third consecutive title for the Italian national team. Growing up in San Candido in South Tyrol, Sinner built his ascent with extraordinary technical and mental progression, becoming a symbol of an entire Italian sporting generation. An autograph from Sinner on an official tennis ball is today one of the most sought-after and valuable pieces in the Italian and international tennis memorabilia market.

Certificate of Authenticity (COA)

This autograph comes with a free MTM Letter of Authenticity (LOA) and a Certificate of Authenticity (COA) issued exclusively by the world's most authoritative independent third-party certification bodies in the collectibles sector (PSA, JSA, Beckett, Epperson, Autograph COA or Autografia Association) — both included in the price.

What is an original autographed tennis ball?

A genuine autographed tennis ball is a unique item where the champion's signature has been directly applied to the ball's felt, without intermediaries. It is distinguished from printed reproductions by the natural pressure of the stroke, the three-dimensionality of the ink on the felt, and the spontaneity of the graphic gesture. Preservation in a plexiglass case protects the autograph from wear and light, maintaining the quality of the signature over time. In addition to these elements, a free MTM Letter of Authenticity (LOA) and a third-party Certificate of Authenticity (COA) are included in the price. For tennis collectors, an autographed ball from a reigning Grand Slam champion represents one of the most iconic and sought-after pieces in the entire sector.

Authenticity and MTM Guarantee

MTM Memorabilia is the Italian benchmark for discerning collectors of authentic sports memorabilia. Each item is selected with rigorous quality and provenance criteria by our experts. The originality of the item itself is guaranteed directly by MTM, while the provenance and veracity of the autograph are declared by the free MTM Letter of Authenticity (LOA). Every shipment is made with rigid, shockproof, and humidity-proof packaging to ensure maximum protection during transit. Express courier delivery within 24/72 hours of payment confirmation, both for Italy and abroad.