Complex sentence: Numerous exhibition games have taken place at CenturyLink Field, including high-profile clubs such as Manchester United, Barcelona, Celtic, Real Madrid, Chelsea, Club América and Chivas de Guadalajara.
Split into simpler sentences: Numerous exhibition games have taken place at CenturyLink Field. These games have included high-profile clubs such as Manchester United, Barcelona, Celtic, Real Madrid, Chelsea, Club América and Chivas de Guadalajara.