After the Seattle Mariners fired Lloyd McClendon in October, Major League Baseball's list of black managers dropped to a whopping zero.

In July, McClendon was asked what it was like being the only black manager in MLB. He described it as," like you're sitting on an island by yourself."

Since then, MLB teams hired two black candidates to fill coaching vacancies. But the issue of diversity looms over the head of professional baseball, and other major American sports. In fact, out of 122 teams spread across America's four major sports, only 16 head coaches or managers are black, and only four of them have held their current positions for more than two seasons.

Have a look for yourself:

Black Coaches in American Pro Sports

Derek Fisher, New York Knicks

Fisher is a first-time head coach in his second season with the team.

Hue Jackson, Cleveland Browns

This is his second run as a head coach, after a one-season run in Oakland.

Sam Mitchell, Minnesota Timberwolves (interim)

Mitchell was thrust into the head coach position after Flip Saunders passed away shortly before the season.

Tony Brown, Brooklyn Nets (interim)

Brown is coaching in place of the fired Lionel Hollins, but he's seen as a long shot to be given the permanent position.

Mike Tomlin, Pittsburgh Steelers

Hired as the youngest NFL head coach at the time, Tomlin has won 98 games and a Super Bowl in nine seasons.

Marvin Lewis, Cincinnati Bengals

Lewis is one of the longest-tenured NFL coaches of any race, but he's still looking for his first playoff win.

J.B. Bickerstaff, Houston Rockets (interim)

Bickerstaff became head coach after the team's slow start led to Kevin McHale's firing.

Doc Rivers, Los Angeles Clippers

Rivers won an NBA championship with the Boston Celtics and is highly regarded among coaches and players.

Byron Scott, Los Angeles Lakers

Scott has been given the unenviable task of coaching up the team's young players while giving Kobe Bryant a victory lap in his final season.

Jim Caldwell, Detroit Lions

Despite a disappointing season that led to the firing of several coaches and executives, the Lions retained Caldwell for a third season with the team.