In the 2010 MLB draft, the Mets chose RHP Ryan Fraser in the 16th round with the 482nd overall pick. This was the second time Ryan had been selected – in 2006, Ryan was chosen in the 49th round by the Tampa Bay Devil Rays, but did not sign.
After Ryan signed with the Mets, he was assigned to the Brooklyn Cyclones (A-) of the New York Penn League where he appeared in 21 games out of the bullpen for Brooklyn with a 3-3 record and an ERA of 1.44 and led the team with 12 saves. In 31 1/3 innings, Ryan gave up 16 hits, walked 20 batters and struck out 39 with a WHIP of 1.15.
In 2011, Ryan was promoted to the Savannah Sand Gnats (A) of the South Atlantic League where he was moved to the starting rotation. In 28 games (21 starts), he had a record of 7-9 with an ERA of 3.58 and 1 save. In 138 1/3 innings, he allowed 140 hits, walking 63 and striking out 90 with a WHIP of 1.47.
In 2012, Ryan moved up one more level, starting the season with the St. Lucie Mets (A+) before being promoted to the Binghamton Mets (AA) of the Eastern League in June where he spent the remainder of the season. In a combined 45 appearances out of the pen, Ryan had a record of 5-4 with an 2.81 ERA with 6 saves. In 64 innings, he allowed 59 hits with 20 walks and 43 strikeouts and a WHIP of 1.23.
After the 2012 season, Ryan was sent to play in the Arizona Fall League where he pitched 14 innings with a record of 1-1 and an ERA of 5.79.
The 2013 season began with Ryan making 5 appearances with the St. Lucie Mets in May before going to Binghamton at the end of May where he spent the remainder of the season. On the year, he appeared in 32 games with a record of 1-2 and an ERA of 5.48. He pitched 42 2/3 innings, allowing 56 hits, 28 walks and striking out 25 with a WHIP of 1.97.