Alexander Isak's Performance Justifies Liverpool's Investment

• Alexander Isak is demonstrating his value as Liverpool's record £125m signing.
• Liverpool and Arsenal considered Isak the solution to their No.9 problems.
• Keeping Isak fit and performing well is crucial for Liverpool's success.
• Isak's performance is starting to match expectations set by his high transfer fee.
• Isak's form is key to Iraola's strategy for Liverpool's revival.