Blazers and Sport Coats: What's the Difference?

Here's how Kempt breaks it down:

Blazers:

usually have patch pockets

often come in blue or black, and are almost always in solid colors

frequently have gold or silver brass buttons

are derived from boating clubs

Sport Coats:

usually have flap pockets, and often a ticket pocket (that small third pocket on the outside of the coat)

come in patterns and textures

are typically a little less structured

are derived from sporting pursuits

So, of the images up top, the first and third are sport coats, while the second and fourth are blazers.

Photos: Club Monaco (1 and 2), Gant (3 and 4)