European Challenge Cup results after Saturday's early matches: Pool 1 Castres 42 Dragons 14 Pool 3 Bordeaux Begles 32 Edinburgh 17 Agen 24 Wasps 52 Pool 4 Stade Francais 24 Zebre 29 Pool 5 Calvisano 19 Pau 47 Playing later on Saturday (all times GMT): Pool 1 Worcester Warriors v Yenisey-STM Krasnoyarsk (1500) Pool 2 Bayonne v London Irish (1600) Scarlets v Toulon (2000) Pool 4 Bristol v Brive (1500) Playing on Sunday: Pool 5 Leicester Tigers v Cardiff Blues (1515) afp