Collin McHugh has a 0.50 ERA for AAA Las Vegas

Over his first three starts of the AAA season, in the notoriously hitter friendly Pacific Coast League, Mets starting pitcher Collin McHugh has an ERA of 0.50 over 18 innings.  He has a WHIP of 1.06, having allowed 15 hits and 4 walks.  He's struck out 15.  McHugh, 25, struggled during a brief run with the Mets last year.  However, considering the alternative is Aaron Laffey, it's quite puzzling that the Mets have thus far refused to give McHugh another chance in the big league rotation.  McHugh had an ERA under 3.00 in AA in both 2011 and 2012, and an ERA of 3.42 last year for AAA Buffalo.