I have trouble distinguishing between those 2 forms.For example
Yesterday, I saw him play soccer in the park.
Yesterday, I saw him playing soccer in the park.
The sams goes with other verbs like hear, watch or notice. I know they are slightly different in meaning but cannot see where. Please explain to me the difference between the 2 sentences above, and how the 2 structures hear/see/watch+verb and hear/see/watch+verb-ing work in general. Thanks a lkot.