Happens often.

Sub comes on, sub is immediately involved - not 100% but often.

Yesterday I brought on a 55Q MC to replace an injured 105Q MC (we were 3-0 up ). He immediately collected a long ball was clean through but GK saved. Had plenty of examples where the sub scores. Far more risky if you do your late sub as defender because there 'Action on appearance' might be a bad one and cost you.