Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: The money keeps growing but the odds are shortening as the richest fight of all time looks set to break the half-billion-dollar barrier. Both Floyd Mayweather and Manny Pacquiao are impressing video-watchers and hand-picked visitors to their gyms in Las Vegas and Los Angeles respectively with their dedication and work rate. But a dramatic improvement in the speed and power of the PacMan’s sparring and pad-hitting in the ring have caught the eye of the so-called ‘smart money’ gamblers. Floyd Mayweather's fight with Manny Pacquiao on May 2 is set to break the half-billion-dollar barrier Pacquiao, who was a 3/1 shot when betting opened, is now down to 2/1 at best.Manny Pacquiao has caught the eye of 'smart money' gamblers... he was a 3/1 shot when betting opened, but now he is down to 2/1Floyd Mayweather and Pacquiao set to meet in the richest fight of all timeMayweather started as the red-hot favourite but has now cooled to 2/3Mayweather: Pacquiao is reckless and makes a lot of mistakesMeanwhile, Gennady Golovkin is in Carl Froch's line of fire 
 Question:Almost everyone else avoids _ like poison but it’s the kind of challenge which excites Carl.

Gennady Golovkin