Watch: Dunn scores, Solo earns 100th clean sheet in USA win

Crystal Dunn scored, Hope Solo earned her 100th clean sheet, and the U.S. women's national team topped South Africa in a pre-Olympic friendly in Chicago.

The U.S. women's national team topped South Africa 1-0 in a pre-Olympic friendly in Chicago on Saturday, with Crystal Dunn finding the net for the game’s lone goal and Hope Solo earning her 100th international clean sheet.

Carli Lloyd made her return to action from an MCL sprain and the fight for final roster places continued in the U.S.’s first-ever match against South Africa. The U.S. is set to face Colombia, New Zealand and France in group play at the Olympics. South Africa will be in Brazil as well, grouped with the host nation, China and Sweden.

Dunn opened the scoring in the 34th minute with a volley off a cross into the box from Mallory Pugh on the left wing.

The goal was Dunn’s ninth of the year, and Pugh’s team-leading seventh assist.

Here was the USA's lineup for the match:

The U.S. will face Costa Rica on July 22 in the final tune-up for the Olympics, where it will aim to win a fourth straight gold medal.