Tbf the modern balls dip and serve all over the place, the disallowed goal was blasted at an awkward height at burge we can't see from that angle how much the ball moved, can't see many keepers in the league doing much better with that.
For the goal, looks as though Thomas coming back to double up on the winger and has got in the way, once these got passed him and into the box grimmer can't really tackle him as he would have brought him down for a pen.
Grimmer is rightly trying to delay the attacker and not over commit, as there are 2 runners central.
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Thomas is closing down the winger
Thomas gets himself between the winger and grimmer**
The wingers got past grimmer, and any real attempt for the ball would have probably resulted in a pen.
**I'd have liked Thomas to have let grimmer close him down and for him to go on the cover.