Okay, the user wants an article about Messi's age in 2015. Let me start by figuring out what that age actually was. Lionel Messi was born in 1987, so in 2015 he would have been 28 years old. Let me double-check that. 2015 minus 1987 is 28. Yep, that's correct. Now, the context provided mentions something about not owning rights to clips or music, and about soccer skills and tricks. The user probably wants the article to be informative but also maybe touch on his career around that time. Since the article needs to be SEO-friendly, I should include keywords like "Messi age 2015," "Lionel Messi career highlights," and maybe "Barcelona 2015." I need to structure the article with headings. The main heading could be "Lionel Messi's Age in 2015: A Look at the Argentine Star's Prime Years." Then maybe a section on his age and career context. I should mention his birthdate, June 24, 1987, so in 2015 he turned 28. Maybe talk about his achievements around that time, like his Ballon d'Or wins. He won it in 2015, so that's a key point. Another section could focus on his performance with Barcelona in 2015. Highlight some stats, like goals and assists. Maybe mention the 2015 Champions League final against Juventus. Also, his role in the Argentine national team, like the 2015 Copa América. But wait, Argentina didn't win that; they lost to Chile. Should I mention that? It might be relevant to show both his club and country performances. I need to avoid unsupported claims. So stick to verifiable facts—goals scored, awards won, specific matches. Maybe include a list of his achievements in 2015. Also, the user's context includes disclaimers about rights, so maybe add a note at the end about not owning the rights to any clips or music used, as per their example. Check the requirements: 600-900 words, natural headings, avoid markdown. Use h2, h3, p, ul, ol, li, strong, em. Make sure to not mention AI generation. Let me outline the sections: 1. Introduction: Messi's age in 2015 and significance. 2. Career Context at Age 28: His position in the team, experience. 3. On-Pitch Performance in 2015: Stats, key matches, Ballon d'Or. 4. National Team Contributions: Copa América, challenges. 5. Legacy and Impact: How his 2015 performance influenced his career. 6. Conclusion: Summarize his achievements at that age. I need to ensure each section flows naturally. For the performance section, include specific numbers like goals in La Liga, Champions League. Maybe mention teammates like Neymar and Suarez. Also, note any records he set that year. For the national team, even though they lost the Copa, highlight Messi's efforts and leadership. Maybe touch on the emotional aspect, as that loss was significant for him. In the legacy section, connect his 2015 achievements to his overall career. Emphasize his consistency and peak performance at 28. Maybe mention how he continued to perform at a high level in the following years. I should also verify the exact number of Ballon d'Or awards he had by 2015. He won it in 2009, 2010, 2011, 2012, 2013, 2015. So in 2015, he won his sixth, which is a record. That's a strong point to include. Check for any potential inaccuracies. For example, the 2015 Copa América was in Chile, and they lost to Chile in the final. Make sure the dates and events are correct. Also, confirm the number of goals he scored in 2015. I think he scored around 40+ goals for Barcelona that year, but need to be precise