Is there a Relationship between new Uniforms and Records?

As we approach the Jays first season wearing their new uniforms, I've decided to take a look back at the last decade of major MLB uniform redesigns to see how those teams performed and if the Jays performing well would be bucking a trend or following it. I've chosen the last decade as my time frame for one main reason; uniforms have become much more constant, as opposed to the 70s through 90s where teams changed their uniform designs on a regular basis.

A "major change" to a team's uniform is either them changing their primary, i.e. across the chest, word mark, a change in the style of jersey, e.g. addition/removal of undershirt sleeves, or a complete overhaul of uniform.

2003 - 2004

Toronto Blue Jays – Removal of blue from colour palate and word mark. – 2003 record: 86-76 - 2004 record: 67-94 – 19 win downgrade

Al_2003_toronto_medium Al_2004_toronto_medium

2004 - 2005

Tampa Bay Devil Rays – Added green undershirt sleeves to home jerseys, ray to word mark. 2004 record: 70-91 – 2005 record: 67-95 – 3 win downgrade



Montreal Expos/Washington Nationals – Move to Washington, become Nationals – 2004 record: 67-95 – 2005 record: 81-81 – 14 win improvement



2005 - 2006

Kansas City Royals – Blue undershirt sleeves from home and road, blue belts – current – 2005 record: 56-106 – 2006 record: 62-100 – 6 win improvement



2006 - 2007

Arizona Diamondbacks – Purple and Green pinstripes – current – 2006 record: 76-86 – 2007 record: 90-72 – 14 win improvement



Cincinnati Reds – Red (home) and black (road) undershirt sleeves, black belts – current – 2006 record: 80-82 – 2007 record: 72-90 – 8 win downgrade



Tampa Bay (Devil) Rays – Green undershirt sleeves – current – 2007 record: 66-96 – 2008 record: 97-65 – 31 win improvement



Pittsburgh Pirates – Black undershirt sleeves – current – 2008 record: 67-95 – 2009 record: 62-99 – 5 loss downgrade



2010 - 2011

Washington Nationals – Block lettering word mark on home jerseys – modern – 2010 record: 69-93 – 2011 record: 80-81 – 11 win improvement.


all photos via

These nine seasons average to 4.5 additional wins per year in the season immediately following the uniform change. The removal of the outlying seasons (+ 31 for the Rays and -14 for Toronto) the average is approximately 4.14 wins added. Although there is a correlation, it definitely isn't a strong one.

Log In Sign Up

Log In Sign Up

Forgot password?

We'll email you a reset link.

If you signed up using a 3rd party account like Facebook or Twitter, please login with it instead.

Forgot password?

Try another email?

Almost done,

By becoming a registered user, you are also agreeing to our Terms and confirming that you have read our Privacy Policy.

Join Bluebird Banter

You must be a member of Bluebird Banter to participate.

We have our own Community Guidelines at Bluebird Banter. You should read them.

Join Bluebird Banter

You must be a member of Bluebird Banter to participate.

We have our own Community Guidelines at Bluebird Banter. You should read them.




Choose an available username to complete sign up.

In order to provide our users with a better overall experience, we ask for more information from Facebook when using it to login so that we can learn more about our audience and provide you with the best possible experience. We do not store specific user data and the sharing of it is not required to login with Facebook.