Three years ago, if you were to name off the U.S. domestic “powerhouse” teams, it would be a pretty easy, and short, list. Mercury and Saturn, followed by Shaklee and Navigators.The following year, Shaklee folded, but adding 7UP to the list, you got: Mercury, Saturn, Navigators, 7UP. Then last year, Prime Alliance, in its second season, pretty much made it the “Big 5.” But what about this year?Mercury is gone, but who steps up? Schroeder Iron, in its second season, with the additions of Chann McRae and Miguel Meza, for sure. The first-year Health Net team? With former Mercury riders Mike Sayer and Gord Fraser leading the charge, you definitely have to keep an eye out for them. How about Jelly Belly? They were knocking on the door last year with strong campaigns by Mariano Friedick and Brent Dawson. So what will it be this year? The Big 5? The Big 6?It’s all up for debate, which is the beauty of this time of year. It’s also, to a large part, the result of the proliferation of Division 3 teams in the past few years, which turned into a hot topic of discussion among VeloNews.com readers this week.Look at those teams that have stepped up to join Mercury, Saturn and Navigators over the seasons. 7UP, Prime Alliance Schroeder Iron. All had humble beginnings, but all stepped it up after their first seasons. Sure you had your Tokyo Joe’s, Noble Houses and Oil Me’s along the way, but where would we be if there weren’t new teams springing up each year? I’ll tell you. We’d have Saturn and Navigators rolling into town each weekend, and beating up on the locals.So, this year we have Navigators in Division 2, and 14 (and counting) Division 3 teams. So maybe some of them are of a questionable level of professionalism. Who’s to say what they’ll look like in two years? Who’s to say whether an experienced pro like a Chris Horner or Chann McRae or a John Lieswyn will recognize some good organization and potential and join on to boost the level of one of these teams?Of last year’s nine U.S. Division 3 teams, eight are back this year: Saturn, Prime Alliance, 7UP, Schroeder, Jelly Belly, Jittery Joe’s, Ofoto and Sierra Nevada. That alone says the teams are doing something right. This year, six teams will make their pro debuts: Health Net, Webcor, Colavita-Bolla, West Virginia, Sportsbook.com and LeMond Fitness-Blender. (Team MONEX and D&R Sportivo have yet to make their official announcements.) Realistically, it will be a success story if, say, all of them make it through the year, four are back for next season, and one makes a Prime Alliance or Schroeder-like jump to the next level. And who knows, maybe next year we’ll be talking about the possibility of the Big 7 or the Big 8. And that’s a good thing.For more on the 2003 domestic road season, pick up the upcoming issue of VeloNews, hitting newsstands March 10, which will have rosters and breakdowns for all of the pro teams, as well as a feature article on Division 3 by contributor Chris Milliman.