Saka sends Arsenal top with victory over West Ham in Arteta’s 300th game

Here is a 180-word summary of the news article: Arsenal defeated West Ham 2-1 in Mikel Arteta's 300th game as manager, sending the Gunners top of the Premier League. After West Ham's Declan Rice scored the opening goal, Arsenal came back with goals from Gabriel Martinelli and Bukayo Saka to secure the victory. The win was significant for Arsenal, as they had struggled against so-called "bogey teams" like Newcastle and Olympiakos in recent weeks. Arteta was pleased with his team's performance, which showed they can break down defenses that adopt a low block, even though 16% of Arsenal's goals under the Spanish manager have come from set pieces. The game was not without concern, however, as both Martin Ødegaard and Declan Rice had to be substituted due to injuries. The extent of the injuries is unclear. Overall, the result and performance will provide a boost for Arsenal as they look to maintain their position at the top of the table. The victory also marked a significant milestone for Arteta in his tenure as Arsenal manager.