There were two big flashpoints during Arsenal's 1-0 win over Liverpool, demonstrating the good and bad sides of VAR.
Isak's non-penalty and Madueke-Mac Allister 'headbutt' - were big calls right?

Original reporting
Sky Sports: read the full reportRelated stories

Ravens QB Jackson to undergo surgery in new injury setback
Lamar Jackson will undergo surgery on his right thumb and miss at least the next four games on injured reserve, Baltimore Ravens head coach Jesse Minter confirmed on Sunday.

Hamilton collides with Verstappen in DRAMATIC race restart!
Lewis Hamilton overtook Ferrari team-mate Charles Leclerc before colliding with Max Verstappen as they battled for the lead in the race restart.
Answering NFL Week 8's biggest questions: Is Bhayshul Tuten ready to be a featured back?
Our NFL Nation reporters react to all the action, answering the biggest questions coming out of each Sunday game. Here's what we learned from Week 8.
Source: Jennings voiced desire to stay with Vikings amid 49ers trade talks
Jauan Jennings expressed his desire to stay in Minnesota after the 49ers tried to reacquire the wide receiver in trade talks with the Vikings.
Ravens QB Jackson needs thumb surgery, will be placed on IR
Ravens quarterback Lamar Jackson needs to have surgery on his injured right thumb and will be placed on injured reserve, coach Jesse Minter said.
UCLA cracks AP top 5, Ohio State to 11th ahead of first CFP release
Ohio State dropped out of the top 10 of The Associated Press Top 25 for the first time in five years, UCLA entered the top five for the first time in 25 years, and New Mexico earned the first ranking in program history.