Every spring training defined storylines are set. However, as it progresses, some unexpected developments take place and change everything fans had assumed. Breakout stars emerge and other “sure things” disappoint.

This year will be no different, and the Cubs have as much uncertainty at the major league level as any team in baseball. That’s why this spring training could be so interesting for the North Siders. Some unexpected contributors could crack the Opening Day roster and some role players could end up with bigger roles than expected.

While there are plenty of moving pieces as the Cubs try to figure out their long-term plans, here are five players that could break out this spring training.

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