Tonight’s first Presidential Debate (ABC, CBS, NBC, PBS, CNN, MSNBC, CSPAN, Fox News, 9 p.m.) between Joe Biden and Donald Trump may be the most seen political event on TV ever. If so it will have to beat the 84 million who watched the debate between Hillary Clinton and Trump.

They’re not exactly debates, of course, but parallel interviews conducted while the opponent shakes his head. Chris Wallace moderates the commercial-free 90 minute event from Case Western University in Cleveland, available across a broad array of networks. In fact, the only network programming is “Tell Me a Story” (CW, 9 p.m.). 

Jane Lynch has both played a snippy TV character (in “Glee”), and has presided over a network game shows (“Hollywood Game Night”) giving her the pedigree to take over for the brusque Anne Robinson in the new reboot of the quiz show “Weakest Link” (NBC, 8 p.m.) in which she will be able to say “You are the weakest link! Goodbye!” 

The new documentary series “True Colors” (Peacock, streaming) highlights Hispanic trailblazers. 

Baseball’s postseason begins with 16 teams competing in a three-game first round tournament. It starts in the American League with Houston at Minnesota (ABC, 2 p.m.), Chicago at Oakland (EPN, 3 p.m.), Toronto at Tampa Bay (TBS, 5 p.m.) and New York at Cleveland (ESPN, 7 p.m.). 

A new standup comedy special is “Michelle Buteau: Welcome to Buteaupia” (Netflix, streaming).