- Golf Alumni and Trainees
- Time Spent With IMG: 2008 - 2010
- Hometown: Buenos Aires, Argentina
- Languages Spoken: English
Grillo is a a professional golfer from Argentina. He had an accomplished amateur career, winning four events including: the 2011 Tarra Cotta Invitational, 2010 Copa de las Americas, 2009 PING Invitational, and 2009 Junior World Championship. He was an AJGA First Team All-American in 2010 and 2011.
Upon turning pro in 2011, Grillo entered the European Tour Qualifying School. He finished in 8th place earning his card for the 2012 season. He ffinished with a top-10 in his first event, the African Open, and finished the season in the top-100 of the Order of Merit.