Sitiveni Sivivatau of the Chiefs is brought down by Jean De Villiers of the Stormers. Photo / Getty Images
Round 13 was lucky for the underdog sides but it wasn't for the average punter with the number of upsets over the weekend working in the favour of the TAB.
The defining moment of the weekend was the sin-binning of Stormers' winger Gio Aplon. Minutes earlier the Chiefs were paying
$9 for the win, which were quickly cut to $2.70 after the home side were awarded a penalty try.
It wasn't the only shock result of the week with the Lions and Cheetahs earning huge upsets.
The TAB breaks down the rest of the weekend's betting action:
