Anderson slipped in his follow through during the 40th over and injured his knee.
Despite being nearly 40 years old, the fast bowler is still enjoying a good spell in the ongoing Test series against India and is leading his team's bowling attack. Anderson has picked 14 wickets so far.
However, the pacer won hearts when he bowled with a bloodied knee. The injury happened when Anderson slipped in his follow-through during the 40th over and injured his knee in the process which was bleeding and stained his trousers.
However, Anderson decided to continue bowling in the next over instead of going off to get treatment
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Fans were quick to notice blood spilling out from Anderson's knees as it was soaked up by his track pants. However, they were impressed by the veteran's dedication to continuing on with his job and took to Twitter to applaud the English pacer.
Here are the tweets: