[NumLock]

Код:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses WinHTTPComponents;

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  WinHttp: TWinHttp;
  ResponseContent: TFileStream;
begin
  WinHttp:=TWinHttp.Create(Self);
  ResponseContent:=TFileStream.Create('Project1.html', fmCreate);
  try
    WinHttp.Get('https://www.betmarathon.com/su/live/popular', ResponseContent);
    ShowMessage('Ok');
  finally
    ResponseContent.Free;
    WinHttp.Free;
  end;
end;

end.