Its very unlikely that Simon, Arredondo, and Marshall all have sub 3 era next season.
Agree on Simon. Arredondo, other than the year when his elbow exploded had ERAs of 1.62, 3.23, 2.95. I would expect his ERA to be around 3. Marshall has been under 3 for 3 years running so I would be more surprised if his wasn't under 3.