I also believe many on here are overrating Gray by a large margin. Been pitching like crap for a while and check out games aaay from Oakland.
I think you are far off on Gray. He's come around pretty well after his 5/30 start @ Cleveland. 8 starts, 50.1 IP, 17 ER (3.04 ERA), 48 K, 16 BB (K:BB 3:1), 39 H (1.09 WHIP). OF his 14 starts, he's given up > 3 ER only 3 times, and only once since the beginning of June. His FIP and xFIP are in line with his prime. He'd push Gio for the #3 slot on this team.
Every contender is kicking the wheels.
https://www.mlbtraderumors.com/oakland-athleticsThat said, I don't give Robles for just him. I put him in a package to get doolittle and madson. I round out the deal with guys like Treinen, who folks still think has great stuff, and almost any arm in out minors.