Thought I would share and spur some discussion. I started with the following definitions for ACE & then for TOR. I felt they would be quantifiable & measurable. An Ace is a starter that has finished in the top 4 places for the CY Young voting over the past 3 seasons. Assuming nobody repeats that is a max of 24 pitchers (across both leagues). Realizing there will always be repeat individuals, I'm guessing the number is closer to 14 total. A TOR is a starter that has finished in either the 5 thru 9 spots for CY Young voting over the past 3 seasons (but never in the top 4 spots). Assuming nobody repeats that is a max of 30 pitchers (across both leagues). Realizing there will always be repeat individuals and some will be top 4 in other seasons, I'm guessing the number is closer to 16 for this level. Hence I'm guessing we end up with roughly 30 top starters. Now for the validation/ measuring of the above thoughts. Using the years 2015, 2016 & 2017 I found the following: I got the voting results from the BBWAA website. https://bbwaa.com/tag/cy-young/ 18 Aces with 9 in each league at the end of 2017. One has since moved leagues. Names in order of recency (2017 first) of making the above definition. AL Aces: Kluber, Sale, Severino, Carrasco, Porcello, Verlander, Kuechel, Price, & Sonny Gray NL Aces: Scherzer, Kershaw, Strasburg, Grienke, Jon Lester, Kyle Hendricks, MadBum, Jake Arrieta, Gerrit Cole (has since moved leagues). 15 other TOR guys with 7 in the AL & 8 in the NL. Again names in order of recency (2017 first) of making the above definition. AL: Marcus Stroman, JA Happ, Aaron Sanchez, M. Tanaka, Chris Archer, King Felix, Collin McHugh NL: Gio Gonzalez, Robbie Ray, Jacob deGrom, Jimmy Nelson, Alex Wood, Johnny Cueto, Noah Syndergard, & John Lackey. So this gives us 33 total pitchers and to be honest I am not thrilled to see certain names listed to either category. I don't believe Cookie Carrasco is an Ace (YET) but I believe he is a TOR. Others like Rick Porcello (receiver of great run support in 2016), Kyle Hendrick, Alex Woods & JA Happ might just be 1 year wonders. King Felix & Lackey make the listing only because they still had very good years in 2015. Does that still make them TOR in 2018?? I'm doubting that. Thoughts/ Comments??