Final answer:
The team and the coach were probably nervous about Zach playing goalie due to the critical nature of the position, the significant responsibilities it entails, and the potential lack of confidence in Zach's abilities which could impact the team's performance.
Step-by-step explanation:
The team and the coach were likely nervous about Zach playing goalie because this position is very crucial in a soccer game. Being the last line of defense, the goalkeeper has a significant impact on the outcome of the game. If Zach was inexperienced, substituted for an injured player, or had a history of underperformance, it would naturally cause anxiety among the team and coach, as they would be relying on him to prevent the opposing team from scoring. The pressure and responsibilities of a goalie are immense because they not only have to stop goals but also direct the defensive play. Moreover, confidence and trust in a goalie's ability can significantly affect the team's morale and overall performance.