Could the prophecy in The Cursed Child refer to the events in The Goblet of Fire?
“When spares are spared,
when time is turned,
when unseen children murder their fathers,
then will the Dark Lord return."
1. Cedric was the spare.
2. Time is turned in PoA which leads to Pettigrew going into hiding and eventually bring back Voldemort.
3. Crouch Jr killed his father.