By GARY FITZGERALD

DEMETRI Catrakilis kicked the crucial winning penalty four minutes from time as Quins left Warriors shell-shocked and booked themselves another European semi-final.
The replacement fly-half nailed his kick to leave Worcester shattered and set up big celebrations among the visiting players and fans. Quins now face a mouthwatering clash with either Clermont Auvergne or Northampton Saints who face each other today.
Quins, the only team to win the competition three times, are lying in fourth place in the Premiership and in good shape to qualify for the Champions Cup. But th...