Roundup of some of the best defensive plays made in Major League Baseball this week

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A host of Major League Baseball players flashed the leather this week to make some incredible catches -- and many occurred at key moments of their respective games. Take a look below and watch some of our favorite defensive highlights from around the big leagues.

1. Kole Calhoun charges in on a sinking line drive and makes an amazing diving catch to steal a hit from
Matt Kemp

2. Aramis Ramirez makes a diving stop into foul territory and fires from his knees to get Andrew Susac out at first base Arismendy

3. Alcantara dives to make a great catch on a sinking line drive hit to center by a Josh Rutledge Arismendy Alcantar

4. Kirk Nieuwenhuis makes his second diving catch of the game, robbing Jose Lobaton and preventing the game-winning run from scoring

5.Hunter Pence tracks down a line drive and leaps to make a great catch in right field to save a run

6. Jean Segura lays out to prevent a grounder from reaching center, then flips a slow-rolling ball to second base for the forceout

7. Alexi Amarista makes an outstanding running grab in the 9th to rob Eduardo Escobar of a walk-off hit

8. Yasiel Puig fires a laser to third base from center field to throw out Hank Conger

9. Kirk Nieuwenhuis makes a pair of clutch, extra-inning diving catches in the Mets' matchup with the Nationals

10. Adam LaRoche makes a tough play look easy as he catches Wilmer Flores' popup in foul territory over his shoulder for the out

11. Kirk Nieuwenhuis takes a hit away from Jayson Werth as he dives to catch his sinking line drive to center field in the 10th inning

12. Howie Kendrick makes a full-extension diving stop on a hot shot from Adrian Gonzalez and fires to first for the out, saving a run

13. Spectators went on a mad dash in search of a foul ball, but a young fan reaches under the seat in front of her and comes up with it