Red Bull unsure of cause of Verstappen’s cracked rear wing

After Verstappen had produced a strong lap in final practice before it was deleted for track limits, Red Bull discovered there was a visible crack in his rear wing.
The team elected to make repairs to it to beef it up before qualifying, as well as strengthening the wing on team-mate Sergio Perez’s car as a further precaution.
But without a definite answer as to what caused the problem, Red …Keep reading