How did SF Giants righty Logan Webb become an ace?
The next five seem more obtainable for Webb to come close to, but as always never say never, because, at the end of the day, we are trying to project, or predict, the unpredictable.
In 2014, Yu Darvish was 27 in his third year for the Texas Rangers, going 10-7 with an ERA of 3.06, and a 3.5 WAR.
Way back in 2001, Tim Hudson in his age-25 season, went 18-9 with an ERA of 3.37, with a 4.5 WAR.
Most recently, Sandy Alcantara, this past season went 9-15 (on a Marlins team that did not win a lot of games) with an ERA of 3.19
Johnny Cueto in 2010 - his age 24 season - went 12-7 with an ERA of 3.64, and a 2.4 WAR for the Cincinnati Reds.
Finally, Madison Bumgarner, in 2012 at the age of 22, posted a 16-11 record with a 3.37 ERA and a 2.0 WAR.
Between these five, the average line works out to be 13-10, 3.22 ERA, and 3.3 WAR, which is something to keep in mind for later.