Christina Unkel

Referee Christina Unkel breaks down what a handball is, the tricky part of the offside rule and more

Several Champions League moments illustrate ways the game's rules don't work as well as they should

Referee Christina Unkel breaks down the disallowed Spurs goal and late Atletico Madrid drama

How Barcelona's Ousmane Dembele escaped a red card and the rest of the week's biggest calls

Referee Christina Unkel explains how VAR got a crucial handball call wrong against Barcelona

There were many huge moments involving refs this week in UCL, former referee Christina Unkel is here to break them down

That, plus: Lisandro Martinez's handball penalty was the correct call

Let's take a look at the key match incidents in the Derby della Madonnina

Sometimes even when a ref misses a call, it doesn't change the outcome

Lazio was a 3-2 winner over their capital rival on Sunday

Concacaf stadiums were not prepared to use VAR, no video replay as teams try and qualify for World Cup 2022

How do referees prepare for the biggest game of the season?

While the ESL might be gone for now, recent legal rulings suggest teams could try again if European law isn't changed

VAR Massimiliano Irrati is worth his weight in gold following Erling Haaland's penalty kick retake on Tuesday

Let's break down the 'controversial' Champions League refereeing decisions from the week