Santoro placed fourth in the MIAAs last year. He came up from the junior varsity half way through the season and replaced the injured Yamil Cristobal in the starting lineup.
Santoro finished 16-18 on the varsity after going 20-0 on the jayvee.
"He has gotten so much better so quickly," Lacroix said. "I think that's something that would excite college coaches."
Two other Pallotti wrestlers, sophomore Justin Chenault (113, 49-9) and Cristobal (220, 32-10), a senior, finished as runners up in the MIAAs.
Chenault had a first-round bye, pinned McDonogh's Alexander Kline in 5:25 in the quarterfinals, then beat John Carroll's Austin Smith, 7-4, in the semifinals, before losing to two-time champion Ryan Friedman (42-5) of St. Paul's, 9-1, in the final.
Cristobal opened the tournament by pinning Archbishop Curley's Scott Landess.
He followed that up by recording a 6-1 win over Mount St. Joe's Alex Bamabae and cruising past Loyola Blakefield's Sam Roberts, 11-4.
Cristobal lost the title bout, 12-2, to two-time champion and Gilman senior Shane Cockerille, a University of Maryland on a football scholarship in the fall.
Cockerille owns a career record of 155-27.
"He tried the close the gap a little bit, but the other kid is a little more athletic," Lacroix said. "We will see him again (at states) and will try to modify our attack and be more offensive."
Pallotti senior Griffin McWilliams (36-14) placed third at 120.