Grundy's score actually looks a bit "low".
33 hitouts. Assuming his 2018-20 HTA rate of 30% (surely going better than 30% tonight?) that's already 49 points. Add in 25 points for his tackles and marks, and he's only received 31 points for 15 disposals, 10 of which are contested. 75% efficiency. A minus 4 for a FA I'll note.