I assume you're talking about your game in Iba against Presbyterian. I'm far from an expert but the first thing that strikes me is that you didn't do much to defend their leading scorer (Norrell) and he put up 17 against you. Their starting PF only averages 5.1 PPG, yet you let Shaffer, who has 80 defense, defend him instead of putting him at C and having him guard Norrell. Shaffer's speed even matches up with Norrell's well so he could have potentially shut him down.
Then I see that you played a balanced defense. Considering 3 of their top 4 scorers are frontcourt guys (and the other guy is a SG who only averages about 7 PPG) I would have definitely gone inside with maybe a -3 defense. They also only have 3 guards on their entire roster-- if you had run an uptempo offense you could have tired them out quickly, especially since none of them has great stamina. So you could have taken much better advantage of that as well.
I would also probably start Mathes at SG, but that's just me. Better ATH, SPD, passing, and DEF, with only 4 less perimeter. BH is the only thing Jones has him on but to me everything else overcomes that. Mathes also knows your offense a LOT better.
But that's just my two cents.