2026 Leaf Signature Series Sports: One-of-One Autographs and a New Celebrity Chapter

Conor McGregor's autograph preview sits beneath an elaborate black-and-white frame. Macaulay Culkin's Celebrity Series card trades that ornament for a red theater marquee edged with lights. 2026 Leaf Signature Series Sports brings the two into one autograph release, with a particularly clear numbering rule: every autograph is a one-of-one.

Leaf's calendar places the release in August 2026. The official description calls the product Leaf Metal Signature Series, while its catalog title is Signature Series Sports. Both identify this same release, which uses metal technology for its autograph cards.

The signature gets a stage

McGregor's preview uses a checkerboard-patterned upper frame and curling white ornament around the portrait. The large white autograph area follows the same curved outline, leaving the ink easy to see. The photograph and border occupy clearly different layers within the design.

Culkin's card is much more literal about presentation: spotlights cross behind the portrait, while round lights run around the red border. The signature occupies a pale panel near the bottom. It is a suitable visual introduction to the celebrity autographs making their Signature Series debut in 2026.

Leaf's advertised entertainment names include Culkin, Julianne Moore, Paul Giamatti, Chris Pratt, Johnny Depp, Daisy Ridley and Jeff Goldblum. Sports subjects include Ken Griffey Jr., Larry Bird, Giannis Antetokounmpo, Nolan Ryan, Peyton Manning and Ronaldo Nazário. The roster makes the distinction between the sports and celebrity designs meaningful within the same product.

A 1/1 rule, with different designs inside it

The all-1/1 autograph numbering describes the individual cards. The release still contains different subjects, themes and multi-signature combinations. A specific McGregor autograph and a specific Culkin autograph remain different collecting choices even though both follow that numbering rule.

New Decade Series cards pair athletes with artwork inspired by particular decades. Multi-signed cards continue as another part of the program, with the combination of names supplying their own connection across the sports selection.