In Back to the Future II (1989), Griff has a Kirk Gibson Jr. baseball bat in the future. Bog Gale was writing the script when Kirk Gibson won a World Series game
Kirk Gibson's 1988 World Series home run - Wikipedia
4: Kirk Gibson's Bat from the 1988 World Series – Robb Report
In Back to the Future, Part II, Biff carries a Kirk Gibson
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In Back to the Future, Part II, Biff carries a Kirk Gibson
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Kirk Gibson Jr. Slugger 2000 adjustable bat, Futurepedia
The Astrodome with natural grass and transparent roof, 1965. Willie
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Kirk Gibson Jr. Slugger 2000 adjustable bat, Futurepedia
Turn back the clock, Topps