If the opponent runs a man-2-man defense, then i think that can be a good idea. M2M will have the one-on-one matchup, and the tendency may be for the targeted defender to pick up fouls. This will be more effective if the defender has low DEF, low ATH for big men, or low SPD for guards... (and on the flipside, your offensive guy has good ATH and LP for big men, and good SPD and BH (amd ATH as a bonus) for guards.
Versus Zone and Press it's a little different...
Zone (a 2-3 zone) on defense combines the ratings of the 2 guards into one composite rating (for ATH, SPD, REB, DEF and BLK)... it also combines the SF and PF ratings into one composite rating in the same way. The center stands alone.
Press works as a series of double-teams, and it's good for your team (your players with higher distribution) to have good BH and PASS, but it's tough to target 1 specific defender, generally.
Looking quickly at the recruits that you signed, they all seem solid in ATH and DEF, which is the #1 key to building a solid team in Hoops Dynasty from what i've experienced.
Good luck!