my current team
Magikarp Lv. 14 Pikachu Lv. 16 Mankey Lv. 17 Sandshrew Lv. 12
Yep he has a mankey (Lv. 18 I guess) and it knows two physical moves (low kick and karate chop) and he keep destroying my team with a SINGLE mankey
Teach Sandshrew either dig or slash. Sandshrew has high physical stats, so it should be able to defeat a Mankey.