Despite only 2.92 K/9 he's got an ERA well below 4 because he's stranded 85.5% of base runners and has gotten lucky with a .215 BABIP. His ERA should be closer to 5. On the flip side Jarrod Parker keeps getting better. He had a 7.36 ERA in April, 3.62 in May and followed it up with a 1.91 ERA in June so far. I think he keeps it going as the Mariners have a .537 OPS against him in 85 AB.
