This week in Major League Baseball, the longest home run of the season was hit. 

While the usual suspects like Giancarlo Stanton and Mark Trumbo do appear on this week's list of longest home run blasts, it was an unusual suspect that impressed us all. 

However, to find out identity of the slugger with the longest home run blast this season, you will have to continue clicking through the slideshow. 

Distance: 437 Feet

Date Hit: September 13

Giancarlo Stanton makes his first of two appearances on the list this week with this 437-foot blast off of New York Mets pitcher Jonathan Niese.

Stanton's homer to left in the second inning of Friday night's game at Citi Field was a rather pedestrian effort compared to the second homer he has on this week's list. 

This specific shot was his 21st home run of the season. 

Distance: 443 Feet

Date Hit: September 10

The Chicago Cubs have not had much to cheer about this season, but at least this week they have a long bomb by Wellington Castillo to celebrate. 

Castillo's two-run shot in the second inning of Tuesday's game against Cincinnati traveled into the upper deck in left field at Great American Ball Park. 

The deep bomb was just the fifth home run of the season for Castillo. 

Distance: 452 Feet

Date Hit: September 11

Stanton reappears on the list with the third-longest blast of the week. 

At home on Wednesday against Atlanta, Stanton delivered one of his trademark moonshots to deep center field at Marlins Park. 

His 20th home run of the season gave his club a four-run cushion in the bottom of the fifth inning.

Four of Stanton's five hits against Braves lefty Mike Minor in his career have been home runs. 

Distance: 454 Feet

Date Hit: September 11

Watch Home Run Here

On the same night where Stanton delivered the third-longest blast of the week, Mark Trumbo outdid the Marlins outfielder by two feet with his home run off of Toronto's R.A. Dickey. 

Trumbo hit his monster big fly into deep center field off of the Blue Jays' knuckleballer. 

Wednesday night's blast helped Trumbo reach a personal milestone as he hit his 33rd home run of the season.

Before this season, Trumbo's career-high in home runs was 32, which he tallied last season. 

Distance: 486 Feet

Date Hit: September 8 

On Sunday, Evan Gattis delivered the longest home run blast to date this season against Philadelphia. 

The Atlanta backstop sent a Cole Hamels 1-0 pitch on to the concourse of Ashburn Alley at Citizens Bank Park. 

The rocket to straight away center field was the 17th home run of the season for El Oso Blanco. 

Gattis' home run beat out the old record holder, Hunter Pence, by 10 feet to capture the title of longest home run of the season.