Multiple web search results report that Sony developed a robot named Ace capable of competing against top table tennis players. Sources mention the robot's ability to track and return shots at high speeds.

Multiple web search results report that a humanoid robot beat the human half-marathon world record in Beijing. While the exact timing ('start of this week') cannot be verified, the core event (robot beating human record in Beijing) is corroborated by multiple independent searches.

Two independent web search results specifically describe the robot named 'Ace' having a single arm with eight joints and using nine cameras to track the ball's logo and detect its spin.

Multiple web search results attribute the quote, 'You have to learn how to play from experience,' to Sony AI researcher Peter Dürr, who co-authored the study.

Two independent web search results state that the robot Ace was trained using reinforcement learning.

Two independent web search results confirm that Sony built an Olympic-sized table tennis court at its Tokyo headquarters for the experiments. While Wikipedia confirms the Sony Building's location, the specific detail about setting up the court for the experiment is corroborated by web search results.

Two independent web search results confirm that the table tennis experiment was conducted on a standard-sized court and that official table tennis rules were applied.

Multiple web search results confirm that Sony stated the robot's performance was a significant milestone, demonstrating the machine's ability to achieve expert-level play against skilled human athletes.