Over the past 20 years, MLB saw a huge spike in the # of players who were able to hit or approach hitting 500HR in their careers. No surprise to me how that coincides with the steroid/PED eras, but that's a discussion for another day. I took a look at the list of active HR leaders in MLB today, and was shocked at how few players currently have a legit shot at 500 HR. Even with the parks getting smaller, many of today's best players are nowhere near the 500HR club and even the young stars already find themselves with an uphill battle. I think pitching has gotten better and I also think at least having a drug testing policy has helped to bring career arcs back to historical averages - you don't see players jacking 40+HR per year into their late 30's or even 40's anymore. Here's the current list of who I think still has even the slightest of chances at 500HR: Pujols - 492 (2nd behind ARod on active list, if you count ARod as active) - Pujols will get there this season. 3 seasons ago many assumed 700HR was likely for Pujols, just 2+ seasons into his crazy contract and 600 is starting to look like a pretty big hill to climb for an aging slugger who can't stay healthy anymore. Dunn - 442 (3rd) - Dunn is 34, and IMO is likely to get to 500HR only if an AL team wants to give him a new deal after this season. 2014 is huge for Dunn, because if he has an off year it may be difficult for him to find a team willing to sign a DH who has been making progressively more outs and less contact as he ages. David Ortiz - 432 (6th) - Big Papi IMO is about 50/50 to reach 500, but he's 38 and would likely need 3 solid seasons by his career averages to get there. Miggy Cabrera - 366 (9th) - Cabrera's 31, and barring a pile of injuries costing him multiple seasons in his early 30's, Cabrera will get to 500 - I don't see him reaching 600 though. Fielder - 285 (17th) - Fielder is 30, and playing in Texas should give his power #'s a boost...215 HR is a lot to hit, but if he can transition into a DH role to prolong his career I think he has an outside shot of getting to 500. Braun - 211 (30th) - Braun is also 30, but the PED suspension and thumb injury last year cost his chances dearly to reach 500HR. Unless the thumb injury subsides and he goes on a 2-3 season tear, I don't see it happening. I skipped over a bunch of other active players between Fielder and Braun who IMO are either too old or not the type of hitters who are capable of 250+ more HR in their careers. Mark Reynolds - 203 (32nd) - Surprised on two fronts - he's only 30, and he's this high up the list. I don't see his career lasting long enough to come close to hitting about 300 more HR, but it's still cool seeing him here. Jay Bruce - 166 (46th) - still only 27, Bruce plays in the right park and is the right type of hitter to approach 500HR. He could be around 280HR once he hits 30, which would give him a shot. Justin Upton - 135 (73rd) - at 26 years old, a great prime would give him a good chance, but 500's a long way off Giancarlo Stanton - 119 (83rd) - 24 yrs old, unlimited power. If he stays healthy, I think he'll get there. He's that good. Mike Trout - 64 HR at the age of 22 - give me 3 more great seasons of 30+ HR and he's in the conversation...too soon to tell though