If my calculations are correct, the current Mets all-time winning percentage is .4789308. They haven't advanced their all-time winning percentage since 2009, which makes sense if you think about it. While they are trending in the right direction from their inauspicious .000 beginning, they are unlikely to advance their all-time winning percentage this season. Milestone advancements (if you consider turning over the hundredths digit in your winning percentage a milestone advancement) are below. Unsurprisingly, a good chunk of those advancements came in 1962. [list:3nthf2gp][*:3nthf2gp]On Monday, April 23, 1962, the Mets beat the Pirates, 9�1, and achieved a winning percentage of .100 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, April 28, 1962, the Mets beat the Phillies, 8�6, and achieved a winning percentage of .110 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, April 28, 1962, the Mets beat the Phillies, 8�6, and achieved a winning percentage of .120 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, April 28, 1962, the Mets beat the Phillies, 8�6, and achieved a winning percentage of .130 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, April 28, 1962, the Mets beat the Phillies, 8�6, and achieved a winning percentage of .140 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp] [list:3nthf2gp][list:3nthf2gp][*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .150 or more for the first time in their history. [*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .160 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .170 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .180 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .190 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp][/*:m:3nthf2gp][/list:u:3nthf2gp] [fimg=500:3nthf2gp]http://static01.nyt.com/images/2015/05/31/sports/DOG-31wright1/DOG-31wright1-master675.jpg[/fimg:3nthf2gp] [list:3nthf2gp][*:3nthf2gp]On Sunday, April 29 (Game One), 1962, the Mets beat the Phillies, 8�0, and achieved a winning percentage of .200 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Tuesday, May 8, 1962, the Mets beat the Cubs, 3�1, and achieved a winning percentage of .210 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Tuesday, May 8, 1962, the Mets beat the Cubs, 3�1, and achieved a winning percentage of .220 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Tuesday, May 8, 1962, the Mets beat the Cubs, 3�1, and achieved a winning percentage of .230 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, May 12 (Game One), 1962, the Mets beat the Braves, 3�2, and achieved a winning percentage of .240 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp] [list:3nthf2gp][list:3nthf2gp][*:3nthf2gp]On Saturday, May 12 (Game One), 1962, the Mets beat the Braves, 3�2, and achieved a winning percentage of .250 or more for the first time in their history. [*:3nthf2gp]On Saturday, May 12 (Game One), 1962, the Mets beat the Braves, 3�2, and achieved a winning percentage of .260 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, May 12 (Game Two), 1962, the Mets beat the Braves, 8�7, and achieved a winning percentage of .270 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, May 12 (Game Two), 1962, the Mets beat the Braves, 8�7, and achieved a winning percentage of .280 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, May 12 (Game Two), 1962, the Mets beat the Braves, 8�7, and achieved a winning percentage of .290 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp][/*:m:3nthf2gp][/list:u:3nthf2gp] [fimg=500:3nthf2gp]http://assets.nydailynews.com/polopoly_fs/1.1056074!/img/httpImage/image.jpg_gen/derivatives/gallery_1200/opening-day-mets-1962-polo-grounds.jpg[/fimg:3nthf2gp] [list:3nthf2gp][*:3nthf2gp]On Tuesday, May 15, 1962, the Mets beat the Cubs, 6�5 in 13 innings, and achieved a winning percentage of .300 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Wednesday, May 16, 1962, the Mets beat the Cubs, 6�5 in 11 innings, and achieved a winning percentage of .310 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Wednesday, May 16, 1962, the Mets beat the Cubs, 6�5 in 11 innings, and achieved a winning percentage of .320 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Wednesday, May 16, 1962, the Mets beat the Cubs, 6�5 in 11 innings, and achieved a winning percentage of .330 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Saturday, May 19, 1962, the Mets beat the Braves, 6�5, and achieved a winning percentage of .340 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp] [list:3nthf2gp][list:3nthf2gp][*:3nthf2gp]On Sunday, May 20 (Game One), 1962, the Mets beat the Braves, 7�6, and achieved a winning percentage of .350 or more for the first time in their history. [*:3nthf2gp]On Sunday, May 20 (Game One), 1962, the Mets beat the Braves, 7�6, and achieved a winning percentage of .360 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, May 20 (Game Two), 1962, the Mets beat the Braves, 9�6, and achieved a winning percentage of .370 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, May 20 (Game Two), 1962, the Mets beat the Braves, 9�6, and achieved a winning percentage of .380 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Thursday, June 25, 1970, the Mets beat the Cubs, 8�3, and achieved a winning percentage of .390 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp][/*:m:3nthf2gp][/list:u:3nthf2gp] [fimg=500:3nthf2gp]http://stuffnobodycaresabout.com/wp-content/uploads/2014/03/Dyer-Boswell-Seaver-Jones-March-1970.jpg[/fimg:3nthf2gp] [list:3nthf2gp][*:3nthf2gp]On Monday, May 3, 1971, the Mets beat the Cubs, 3�2, and achieved a winning percentage of .400 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Thursday, April 27, 1972, the Mets beat the Padres, 4�3, and achieved a winning percentage of .410 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Wednesday, April 11, 1973, the Mets beat the Cardinals, 5�4, and achieved a winning percentage of .420 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Thursday, June 5, 1975, the Mets beat the Astros, 2�1, and achieved a winning percentage of .430 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, September 26, 1976, the Mets beat the Cubs, 2�1, and achieved a winning percentage of .440 or more for the first time in their history.[/*:m:3nthf2gp][/list:u:3nthf2gp] [list:3nthf2gp][list:3nthf2gp][*:3nthf2gp]On Wednesday, October 1, 1986, the Mets beat the Expos, 6�4, and achieved a winning percentage of .450 or more for the first time in their history. [*:3nthf2gp]On Sunday, September 11, 1988, the Mets beat the Expos, 3�0, and achieved a winning percentage of .460 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Friday, July 16, 1999, the Mets beat the Reds, 5�2, and achieved a winning percentage of .470 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, May 10, 2009, the Mets beat the Pirates, 8�4, and achieved a winning percentage of .480 or more for the first time in their history.[/*:m:3nthf2gp] [*:3nthf2gp]On Sunday, May 31, 2009, the Mets beat the Marlins, 3�2, and achieved a winning percentage of .480261, their highest ever to date.[/*:m:3nthf2gp][/list:u:3nthf2gp][/*:m:3nthf2gp][/list:u:3nthf2gp] [fimg=500:3nthf2gp]http://www.mysports-today.com/wp-content/uploads/2009/06/new-york-mets-2009-1.jpg[/fimg:3nthf2gp] The Mets current winning percentage is .478931, needing 18 straight wins to get back to .480, and 22 straight to again achieve (and advance) their highest-ever winning percentage.