The phrase that would best fit the blank is <em>in addition</em>. It means the same as words <em>also, as well, </em>and <em>besides</em>. This means that Champ is on both the basketball and soccer teams.
<em>Therefore </em>and <em>consequently</em> can be used as synonyms, which means that they have the same meaning - <em>as a result. </em>The fact that Champ is on the soccer team is not the result of him being on the basketball team.
<em>In spite of</em> is used to show contrast. This would mean that Champ would be on the soccer team despite being on the basketball team. But, if we used this phrase, the sentence would be grammatically incorrect.
