What If vol.2 #26 (May 1991)
Based on: Daredevil #183
The true history: As a gang war waged by the Kingpin brews in the background, Daredevil spars with the Punisher to save the life of junkie with a weak heart. The Punisher shoots him with a tranq dart and escapes, but DD crawls over to the dying, roughly-interrogated addict and saves his life. He then vows to stop the Punisher's rampage, but gets sidetracked by the Kingpin's machinations and Elektra's return.
Turning point: What if Daredevil had been closer to the roof's edge when the Punisher tranqed him?
Story type: Team Slayer
Watcher's mood: Jamming with heavy metal
Books canceled as a result: Daredevil is the first to go. Then all the Spider-Man books. And finally, the Punisher ones. This story was hard on the Marvel Knights.
These things happen: Thankfully, they haven't. Daredevil #183's COVER seems to say it did though, with DD cut in half with an assault weapon, no doubt where the inspiration for this story came from.
Next time: What if Namor Had Joined the Fantastic Four?
My guess: Reed Richards has to quit because "rubber" is not one of the four elements.