Career Bests
| Event | Time | Date | Competition |
| 50 free | 20.06 | 2/28/19 | Big Ten Championships |
| 100 free | 44.42 | 2/29/20 | Big Ten Championships |
| 200 free | 1:39.23 | 2/28/20 | Big Ten Championships |
| 500 free | 4:31.36 | 2/22/18 | Big Ten Championships |
| 1000 free | 9:36.10 | 10/6/16 | Towson |
| 1650 free | 15:48.10 | 2/25/17 | Big Ten Championships |
| 100 fly | 48.44 | 3/1/19 | Big Ten Championships |
| 200 fly | 1:46.12 | 3/2/19 | Big Ten Championships |
Career Accolades
- Academic All-Big Ten (2017, 18, 19, 20).
- Ranks as the fourth-fastest performer at Penn State all-time in the 200 fly (1:46.12).
- Member of Penn State’s fifth-fastest all-time 200 free relay team (1:18.26).
2019-20 (Senior Year)
- Awards: Academic All-Big Ten.
- Big Ten Championships (2/26-2/29): Swam personal-bests in both the 100 free (44.19) and 200 free (1:39.23) and a season best in the 50 free (20.51).
- St. Bonaventure (10/4): Won the 100 free (45.77).
- West Virginia (10/11): Placed fourth in the 100 free (46.42)
- Villanova (1/31): Placed second in the 200 fly (1:53.44) and finished third in the 100 free (46.89).
2018-19 (Junior Year)
- Big Ten Championships (2/27-3/2): Placed 19th in the 200 fly (1:46.74) after swimming a personal-best 1:46.12 in prelims…Earned personal-best times of 20.06 in the 50 free and 48.44 in the 100 fly.
- Virginia (10/6): Placed second in the 100 fly (50.24) against Virginia.
- George Washington (10/12): Placed third in the 200 free (1:42.21) and 50 free (20.99).
- at Virginia Tech/Ohio State (10/26-27): Had a fourth-place finish in the 200 fly (1:51.27).
- Big Al Open (11/9-10): Placed fifth in the 200 fly (1:50.03).
- Tennessee Invitational (11/29-12/1): Placed third in the 200 fly (1:47.05).
- at Navy/vs. North Carolina (1/12): Placed fifth in the 200 fly (1:51.68).
- West Virginia (1/18): Placed third in the 100 free (45.65) and second in the 100 fly (50.20).
- Bloomsburg (1/19): Placed third in the 200 free (1:43.13) and a second in the 50 free (21.13).
- Villanova (2/1): Placed first in the 200 fly (1:50.18) and fourth in the 100 free (48.95).
2017-18 (Sophomore Year)
- Awards: Academic All-Big Ten
- Big Ten Championships (2/21-24): Scored (1:46.27), achieving a personal best and “B” cut time while ranking as the third fastest performer in the event in school history…Also swam personal bests in the 500 free (4:31.26) and 100 fly (48.86).
- vs. Virginia (10/14): Placed second in the 200 fly (1:50.09).
- at North Carolina/vs. Navy (1/13): Placed third in the 200 fly (1:51.61).
- vs. Villanova (2/2): Won the 200 free (1:40.42) and 100 free (46.28).
2016-17 (Freshman Year)
- Big Ten Championships (2/22-2/25): Scored at the Big Ten Championships in the 200 fly (1:46.79, 12th) and achieved a “B” cut and the team’s fastest time of the year in the preliminaries (1:46.60)…Also earned career bests at the Big Ten Championships in the 1650 free (15:48.10) and 500 free (4:32.06).
- Towson (10/6): Placed second in the 1000 free (9:36.10).
High School
- Four-year letterwinner at Pittsburgh Central Catholic under Coach Merci McCarthy.
- Team captain as a senior.
- Helped lead team to section championships 2015-2016.
- All-American in the 500 free.
- Two-time all-state pick in the 500 freestyle and 2016 all-state honoree in the 100 butterfly.
- 2015 and 2016 WPIAL AAA 500 freestyle champion.
- Two-time PIAA AAA top-eight finisher in the 500 free, and also placed eighth in 100 butterfly.
- Also swam for JCC Sailfish.
- USA Swimming Scholastic All-American.
- National Honor Society member.
- 2016 Esmark All-American.
Personal
- Full name is Matthew Robert DiNunzio.
- Son Bob and Cindy Dinunzio…Mother, Cindy, swam at Pitt.
- Has a younger sister, Laura.
- Uncle, Allan Rose Jr., attended Penn State.
- Majors in agribusiness management.
- Born November 13, 1997 in Buffalo, New York