Sports will be very different in the future. There will be two professional sports worlds, the real world and the virtual. Popular games will continue to be played by live athletes before live audiences, but that audience will dwindle.
Instead, there will be a large selection of simulated games, produced by computers that put actual historical athletes into the game with each other. These virtual games will genuinely be competitive, with uncertain outcomes, and the teams will bid on the simulated athletes just as real sports bid on theirs.
There will also be an underground of genuinely bizarre sports remixes, which put virtual athletes into sports they have never played, including, in a few versions, blood sports. If you have ever wanted to see Babe Ruth battle Kareem Abdul-Jabbar to the death, just wait. These games are coming.